Tag: animal diversity - ii (phylum: chordata)

Quizzes (8) Questions (163)

Questions Related to animal diversity - ii (phylum: chordata)

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Cloaca is

  1. Common aperture for digestive and urinary systems

  2. Common aperture for digestive, urinary and reproductive systems

  3. Common chamber in which reproductive, urinary and digestive tracts open

  4. Common chamber for digestive and urinary tracts
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Cloaca is a chamber or cavity that acts as an exit channel in organisms like reptiles, birds and amphibians.

It is a common chamber where reproductive, urinary and digestive tracts open.
So the correct answer is 'Common chamber in which reproductive, urinary and digestive tract open'

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Identify the aquatic mammals from the following :
(i) Balaenoptera
(ii) Equus
(iii) Delphinus
(iv) Pteropus
(v) Felis

  1. (i) and (iii) only

  2. (v) only

  3. (ii) and (iv) only

  4. (iv) and (v) only
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Balaenoptera (blue whale) and Delphinus (dolphin) are aquatic mammals. Equus (horse), Pteropus (bat), and Felis (cat) are terrestrial.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Humans belong to family

  1. Hominidae

  2. Pongidae

  3. Hylobatidae

  4. Ramapithecus
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Humans belong to the Hominidae family.

Hominidae consists of Human, Gorilla, Chimpanzee and Orangutan.
General Characteristics of this family are:

1. Tails are absent.
2. Flattened nails.
3. Forearms are well developed.
So the correct answer is 'Hominidae'. 

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Which of the following is an oviparous mammal?

  1. Balaenoptera

  2. Delphinus

  3. Pteropus

  4. Ornithorhynchus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mammals are viviparous, i.e. they give birth to young ones. But there are some exceptions. The monotremes like Echidna (Tachyglossidae) and Platypus (Ornithorhynchus) are oviparous mammals.

So, the correct option is 'Ornithorhynchus'.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

If the number of chromosomes in most body cells of a marnmal is 40, the cells in the seminiferous tubule will have

  1. 40 chromosomes

  2. 20 chromosomes

  3. 10 chromosomes

  4. While some other will have 20
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reduction division takes place during spermatogenesis. Spermatids and sperms will have haploid number of chromosomes.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Choose the correct answers from the alternatives given.
Which of the following is a true statement?

  1. In all mammals, offspring develop within the female.

  2. All mammals have hair and mammary glands.

  3. All mammals are land-dwelling forms.

  4. All of the above.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Unlike other vertebrates, mammals nurse their young with milk produced by mammary glands. Though they're present in both males and females, in most mammal species mammary glands only fully develop in the females, hence the presence of smaller nipples on males (including male humans) also all mammals have hair at some point in their life. Not all mammals are land dwelling (dolphins)

So, the correct option is, 'all mammals have hair and mammary glands'.

Multiple choice zoology animal diversity - ii (phylum: chordata) aves and mammalia classifications of chordata aves

Which of the following is an egg-laying mammal?

  1. Kangaroo

  2. Whale

  3. Bat

  4. Platypus
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Duck-billed platypus are egg-laying organisms. They are placed under the group of mammals because they possess skin with hair which provides protection and sweat gland which helps in the regulation of the body temperature and ionic balance. They possess milk-producing mammary glands which produce milk for the nourishment of the newborn. They show presence of seven cervical vertebrae and 12 pairs of cranial nerves like all other mammals. 

Thus, the correct answer is option D.