EASY
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Movements of the human body occur by the contraction and relaxation of

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Important Questions on Biology

EASY
What is excretion? Name any two nitrogenous wastes products.
MEDIUM

Give appropriate biological or technical terms for the following:

The relaxation phase of the heart.

EASY
Name the structures that help in excretion in tapeworm, earthworm, cockroach and human beings.
EASY

Redraw the diagram. Name and label the parts indicated, below,

Question Image

Carries impulses away from the cell body

HARD
Which one of the following body parts/organs of the human body does not have smooth muscles?
MEDIUM
Explain the structure of cartilage tissue.
EASY
What is excretion? Name two excretory organs in humans.
MEDIUM
What is excretion? Explain
(i) excretion in Amoeba.
(ii) excretion in Earthworm.
MEDIUM
Which one of the following is the structure of a cardiac muscle cell ?
EASY
Choose the incorrect statements among the following.
A) The female sex organs of Angiosperms are called strobilus.
B) The fusion of motile male gamete with non-motile egg is called zooidogamy.
C) Some algae are in association with animals.
D) Archegonium is flank shaped male sex organ with single cell.
MEDIUM
Give an example of an entomophilous flower.
MEDIUM
Write one function of parenchyma tissue.
MEDIUM
Explain the Haversian system of bone tissue.
MEDIUM
Write two differences between axon and dendron.
EASY
Parenchyma, collenchyma and sclerenchyma are kinds of simple permanent tissues in plants. Which of the following statement is true for collenchyma?
A. Made up of dead cells
B. Have very little intercellular space
C. Cells are irregularly thickened at the corners
D. Cell wall contains lignin
EASY

Observe the picture and answer the following question

Question Image

Name the part indicated as (i).

EASY
The vertebrae are a part of which of the following body systems in humans?