Redraw the picture given below. Identify the name indicated and label the parts The part that adjusts its size as the intensity of light varies.

The human eyes play an essential role in the formation and processing of the image in the brain of the human. This sensory organ is composed of different parts. The pupil can be characterised as a small opening in the iris. The pupil adjusts its size according to the intensity of the light. The pupil’s function is to adjust the amount of light entering the eye.

Match the hormones with the endocrine glands that secrete them. Column A Column B (a) Growth hormone (i) Ovary (b) Adrenaline (ii) Thyroid (c) Insulin (iii) Testes (d) Thyroxine (iv) Adrenal (e) Testosterone (v) Pituitary (f) Oestrogen (vi) Pancreas

For (a) - (v) The pituitary gland is located in a bony cavity and is attached to hypothalamus by a stalk. Growth hormone stimulates growth in all organs. For (b) - (iv) The adrenal gland is an endocrine gland. It is a yellowish colour, with small glands located on top of both the kidneys. It secretes adrenaline hormone. This hormone is released during emergency conditions to prepare the body. For (c) - (vi) Insulin hormone is secreted by the pancreas. This hormone maintains the optimum level of blood glucose in the human body. For (d) - (ii) Thyroxine hormone is secreted by the thyroid gland. This hormone regulates the rate of oxidation of food by cells to generate energy. For (e) - (iii) Testosterone hormone is secreted by testes. This hormone regulates the development of secondary sexual characteristics in both males and it plays a vital role in sperm production. For (f) - (i) Oestrogen hormone is secreted by ovaries. This hormone is responsible for the growth of the secondary sexual characteristics, and regulation of the menstrual cycle and the reproductive system. Column A Column B (a) Growth hormone (v) Pituitary (b) Adrenaline (iv) Adrenal (c) Insulin (vi) Pancreas (d) Thyroxine (ii) Thyroid (e) Testosterone (iii) Testes (f) Oestrogen (i) Ovary

What are the functions of pituitary glands

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Redraw the picture given below. Identify the name indicated and label the parts

Question Image

The part that adjusts its size as the intensity of light varies.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Mention the exact location of the following

Incus.

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Reflex actions occur when the following incidents happen in the everyday life of a human. Give the importance of these two reflex actions:

(i) When food particles enter into the trachea

(ii) When foreign particles enter inside the nasal cavity

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Certain hormones released from the anterior lobe of pituitary gland are given.
Thyroid Stimulating Hormone (TSH)
Adreno Cortico Tropic Hormone (ACTH)
Gonado Tropic Hormone (GTH)

Write one function of ACTH and TSH.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Mention the exact location of the following:
(iii) Malleus

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Certain hormones released from the anterior lobe of pituitary gland are given.
Thyroid Stimulating Hormone (TSH)
Adreno Cortico Tropic Hormone (ACTH)
Gonado Tropic Hormone (GTH)

Write the common feature of these hormones.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

What are the functions of the thyroxine hormone?

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Mrs. Dhir does not use iodised salt in the food she cooks at home. Can this lead to any disorder?

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Name the hormone which prepares our body for action to face emergency situations like danger, fear, anger, or excitement. (Thyroxine or Adrenaline)

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Name the endocrine gland which secretes hormone that maintains correct salt balance in the blood.(Adrenal gland/ Pancreas)

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

What is the function of adrenaline hormone in the body ?

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Name the hormone secreted by pancreas. What is the function of this hormone ?

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Unscramble the given word to get the name of a hormone and write down its function.

TXHYNROIE.

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Write the quadrants in which the following points lie:

$(- 4, 7)$

HARD

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Write in brief about the hormones other then sex hormones.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Write a note why pituitary gland is called the master gland.

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Name one hormone secreted by the pituitary gland. State the function of this hormone.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Match the hormones with the endocrine glands that secrete them.

Column A	Column B
(a) Growth hormone	(i) Ovary
(b) Adrenaline	(ii) Thyroid
(c) Insulin	(iii) Testes
(d) Thyroxine	(iv) Adrenal
(e) Testosterone	(v) Pituitary
(f) Oestrogen	(vi) Pancreas

EASY

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

State the main symptom of goitre.

MEDIUM

Life Sciences>From Molecules to Organisms: Structures and Processes>Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.>Information Processing - Each sense receptor responds to different inputs (electromagnetic, mechanical, chemical), transmitting them as signals that travel along nerve cells to the brain. The signals are then processed in the brain, resulting in immediate behaviors or memories.

Unscramble the given words to get the name of a hormone and write down its function:
IISULNN.

What are the functions of pituitary glands?

Important Questions on Gather and synthesize information that sensory receptors respond to stimuli by sending messages to the brain for immediate behavior or storage as memories.

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