The figure given here is related to the female reproductive system of frogs. Identify the parts labeled as A to D.
Important Questions on Structural Organisation in Animals
(i) The medulla oblongata passes out through the foramen of Monro and continues into the spinal cord.
(ii) Vasa efferentia is 10-12 in number that arises from testes.
(iii) Ovaries have no functional connection with kidneys.
(iv) Frogs are uricotelic.
Refer to the given figures showing two types of glands.
Which of the following statements regarding these glands is not correct?
Read the following statements regarding different types of animal tissues and select the incorrect ones.
(i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium.
(ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large blood vessels.
(iii) Columnar epithelium present in gastric glands, intestinal glands and pancreatic lobules, has a secretory role and is called as glandular epithelium.
(iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels.
Enzyme collagenase breaks the peptide bonds present in collagen protein. Excessive secretion of this enzyme will lead to weakening of which of the following body parts?
(i) Tendons
(ii) Bones
(iii) Hair shafts
(iv) Nails and claws
(v) Intervertebral discs
Refer to the given figure showing reproductive system of female cockroach.
Identify the parts labelled as and and select the correct statement regarding these.
Each thoracic segment of Periplaneta americana is enclosed by four ________ skeletal sclerites: a dorsal________, a ventral______, and two lateral _____ . The _________ of the prothorax is also called pronotum, which covers the neck and a part of the head.
Complete the above paragraph by selecting the correct sequence of words.
