1. | Males have a pair of anal styles, which females lack |
2. | Females have a more segmented abdomen than males |
3. | Males are generally larger than females |
4. | Females have a pair of cerci, which males lack |
I: | Collagen fibres are predominantly found in connective tissues and are important for providing tensile strength. |
II: | Nervous tissue is made up of neurons and neuroglia, where neurons are responsible for transmitting signals and neuroglia for blood clotting. |
III: | Cardiac muscle tissue is striated and involuntary, with cells connected by intercalated discs to facilitate synchronized contraction. |
IV: | Epithelial tissues are avascular but derive nutrients through diffusion from underlying connective tissues |
I: | The male frog has a pair of testes which are attached to the kidneys by a structure called mesorchium. |
II: | The male frog's sperm travels through the urethra which also carries urine. |
III: | External fertilization occurs, and the frog's sperm are released directly into the surrounding water. |
Column I | Column II | ||
1 | Adipose tissue | A | Conducts electrical impulses |
2 | Cartilage | B | Stores fat and provides insulation |
3 | Smooth muscle tissue | C | Reduces friction between bones at joints |
4 | Neuron | D | Contracts to cause movement in various organs |
1. | As ammonia through the skin when submerged in water. |
2. | As urea through the kidneys. |
3. | As uric acid via the cloaca. |
4. | As urea through the skin. |
1. | During aestivation and hibernation, gaseous exchange takes place through skin. |
2. | Forebrain includes olfactory lobes, paired cerebral hemispheres and unpaired diencephalon. |
3. | The urinary bladder is present dorsal to the rectum which also opens in the cloaca. |
4. | A mature female can lay 2500 to 3000 ova at a time. |
1. | They provide structural support |
2. | They facilitate secretion |
3. | They increase surface area for absorption |
4. | They act as sensory receptors |
1. | Exclusively autonomic nervous system |
2. | Only central nervous system |
3. | Central nervous system with paired nerves in peripheral nervous system |
4. | Central nervous system with unpaired nerves in peripheral nervous system |