Animal Kingdom — Page 7 | NEET Biology

Q61

One of the following is a very unique feature of the mammalian body:

A Homeothermy

B Presence of diaphragm

C Four chambered heart

D Rib cage

Correct Answer

Option B

Solution

(b) Presence of diaphragm which separates the thoracic cavity from the abdominal cavity is the characteristic feature of all mammals.

Q62

Which one of the following characters is not typical of the class Mammalia?

A Thecodont dentition

B Alveolar lungs

C Ten pairs of cranial nerves

D Seven cervical vertebrae

Correct Answer

Option C

Solution

(c) Mammals have 12 pairs of cranial nerves.

Q63

Annual migration does not occur in the case of

A Siberian crane

B Salamander

C Arctic tern

D Salmon

Correct Answer

Option B

Solution

(b) Salamander does not undergo any annual migration.

Q64

In which one of the following sets of animals do all the four give birth to young ones?

A Platypus, Penguin, Bat, Hippopotamus

B Shrew, Bat, Cat, Kiwi

C Kangaroo, Hedgehog, Dolphin, Opossum, Loris

D Lion, Bat, Whale, Ostrich

Correct Answer

Option C

Solution

(c) Penguin, Kiwi and Ostrich are birds and oviparous, while Kangaroo, Hedgehog, Dolphin, Loris are viviparous mammals.

Q65

Which of the following pairs are correctly matched? Crocodile - 3-chambered heart; Sea urchin - Tube feet; Obelia - Polypody; Lemur - Thecodont

A (ii), (iii) and (iv)

B only (i) and (iv)

C only (i) and (ii)

D (i), (iii) and (iv)

Correct Answer

Option B

Solution

(b) Crocodile belongs to class Reptilia which has a three-chambered heart.

Lemur teeth are embedded in the sockets known as thecodont.

Q66

Which one of the following is the true description about an animal concerned?

A Earthworm - alimentary canal consists of pharynx, oesophagus, stomach, gizzard and intestine

B Frog - Body divisible into three regions: head, neck and trunk

C Rat - Left kidney is slightly higher in position than the right one

D Cockroach - 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen)

Correct Answer

Option D

Solution

(d) Cockroach has 10 pairs of Spiracles: 2 pairs on thorax and 8 pairs on abdomen.

Q67

Which one of the following statements about all the four of Spongilla, Leech, Dolphin and Penguin is correct?

A Penguin is homeothermic while the remaining three are poikilothermic

B Leech is a fresh water form while all others are marine

C Spongilla has special collared cells called choanocytes, not found in the remaining three

D All are bilaterally symmetrical

Correct Answer

Option C

Solution

(c) Spongilla is a fresh water sponge that belongs to phylum porifera. It has special collared cells called choanocytes.

Q68

Frogs differ from humans in possessing:

A paired cerebral hemispheres

B hepatic portal system

C nucleated red blood cells

D thyroid as well as parathyroid

Correct Answer

Option C

Solution

(c) Human possesses enucleated RBCs in mature state. But frog blood has nucleated RBCs.

Q69

Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?

A Reptilia: possess 3-chambered heart with one incompletely divided ventricle

B Chordata: possess a mouth provided with an upper and lower jaw

C Chondrichthyes: possess cartilaginous endoskeleton

D Mammalia: give birth to young one.

Correct Answer

Option C

Solution

(c) Chondrichthyes are the cartilaginous fish with a flexible skeleton made of cartilage rather than bone.

Q70

What will you look for to identify the sex of the following?

A Female Ascaris - Sharply curved posterior end

B Male frog - A copulatory pad on the first digit of the hind limb

C Female cockroach - Anal cerci

D Male shark - Claspers borne on pelvic fins

Correct Answer

Option D

Solution

(d) A male shark possesses a pair of claspers inserted into a female shark's cloaca at the time of mating.