Frogs can protect itself from enemies by
1. Clawed toes
2. Spiny skin
3. Camouflage
4. Sharp teeth
Which of the following is incorrect statement about frog?
1. Body is divisible into head and trunk
2. The skin is moist without scales
3. A tympanum represents the ear
4. Fore limbs have four digits with webs and hind limbs have five digits without webs
In frog, oxygen dissolved in water can be taken by
1. External nares
2. Spiracles
3. Buccal cavity
4. Skin
A thin-walled, triangular chamber attached dorsally to heart of a frog is known as
1. Truncus arteriosus
2. Sinus venosus
3. Atrium
4. Ventricle
In a frog, heart is enclosed within a two-layered sac called
1. Mesorchium
2. Pericardium
3. Pleura
4. Conus arteriosus
Select the incorrect match with respect to animals and the type of nitrogenous waste excreted by them
Animals Nitrogenous waste
1. Rana - Uricotelic
2. Pheretima - Ureotelic
3. Periplaneta - Uricotelic
4. Tadpole larva of frog - Ammonotelic
Internal fertilization is not seen in
1. Birds
2. Reptiles
3. Frog
4. Mammals
A specialised connective tissue containing chondrocytes can be found at/in
(1) Myocardium
(2) Blood vessels
(3) Tip of nose
(4) Tendons
Select the odd one with respect to secretions of exocrine glands.
1. Saliva
2. Mucus
3. Insulin
4. Milk
Skeletal muscle fibres are
1. Branched, spindle-shaped and uninucleated
2. Striped, multinucleated and unbranched
3. Unbranched, involuntary and cylindrical in shape
4. Voluntary, unbranched and uninucleated