Which of the following statement is incorrect with respect to Rana tigrina?
1. Muscular tongue is bilobed at tip and free from behind
2. Maxillary teeth are arranged along the margin of upper jaw and lower jaw is toothless
3. Tadpole larva of frog is with comparatively short alimentary canal than adult
4. Tail is present in the life cycle of frog
Match the following cell structure with its characteristic feature:
Column I | Column II | ||
(a) | Tight junctions | (i) | Cement neighboring cells together to form a sheet |
(b) | Adhering junctions | (ii) | Transmit information through chemicals to another cell |
(c) | Gap junctions | (iii) | Establish a barrier to prevent leakage of fluid across epithelial cells |
(d) | Synaptic junctions | (iv) | Cytoplasmic channels to facilitate communication between adjacent cells |
Select the correct option from the following:
Options: | (a) | (b) | (c) | (d) |
1. | (ii) | (iv) | (i) | (iii) |
2. | (iv) | (ii) | (i) | (iii) |
3. | (iii) | (i) | (iv) | (ii) |
4. | (iv) | (iii) | (i) | (ii) |
In __i__, the collagen fibres are present in rows
between parallel bundles of fibres. It is an example of
dense __ii__ connective tissue
1. i-cartilage; ii-regular
2. i-cartilage; ii-irregular
3. i-tendon; ii-irregular
4. i-tendon; ii-regular
Compound epithelia is present in -
1. Dry surface of the skin.
2. Moist surface of buccal cavity.
3. Inner lining of ducts of salivary gland.
4. All of these
Which of the following epithelium their main function is to provide protection against chemical and mechanical stresses?
1. Simple epithelium.
2. Compound epithelium.
3. Columnar epithelium.
4. Cuboidal Epithelium
Intercalated disc are a type of
1. Adherent junction.
2. Desmosomes.
3. Communicating junction.
4. Tight junction
Find the incorrect match
1. Bufo- Toad
2. Rana- Frog
3. Hyla- Tree frog
4. Rana- Common toad
Cell junctions like tight, adhering, and gap junctions are mainly present between the neighbouring cells of:
1. Neural tissue
2. Connective tissue
3. Muscular tissue
4. Epithelial tissue
Which of the following is not a feature of skeletal muscles?
1. Are associated with skeletal components of the body
2. Striped appearance
3. Voluntary control
4. Transportation of food through digestive tract
Dense irregular connective tissue has
(1) Oriented parallel
(2) Has less fibres
(3) Mostly collagen
(4) No fibroblasts