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NCERT Exemplar · Class 11 · Biology

Chapter 4: Animal Kingdom

Practice each question, then open the answer or worked solution.

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VERY SHORT ANSWER TYPE QUESTIONS

15 questions
Q11Written answer

Write one example each of the following in the space provided.

a. Cold blooded animal ________________________

b. Warm blooded animal ________________________

c. Animal possessing dry and cornified skin _______________

d. Dioecious animal _____________________

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Worked solution

a. Cold blooded animal: Frog (Amphibians)

b. Warm blooded animal: Humans (Mammals)

c. Animal possessing dry and cornified skin: Lizard (Reptiles)

d. Dioecious animal: Ascaris (Aschelminthes)

Q12Written answer

Differentiate between a diploblastic and a triploblastic animal.

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Worked solution

Diploblastic animals are with cells arranged in two embryonic layers. Example: Coelenterates

The triploblastic animal is those which the developing embryo has a third germinal layer. Example: Chordates.

Q13Written answer

Give an example of the following

a. Roundworm

b. Fish possessing poison sting

c. A limbless reptile/ amphibian

d. An oviparous mammal

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Worked solution

a. Roundworm: Ascaris

b. Fish possessing poison sting: Trygon

c. A limbless reptile/ amphibian: reptile – Snake, Amphibian – Ichthyophis

d. An oviparous mammal: Duck-billed platypus

Q14Written answer

Provide appropriate technical term in the space provided.

a. Blood-filled cavity in arthropods __________________________.

b. Free-floating form of cnidaria _____________________________.

c. Stinging organ of jelly fishes ______________________________.

d. Lateral appendages in aquatic annelids ___________________.

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Worked solution

a. A blood-filled cavity in arthropods: Haemocoel

b. Free-floating form of cnidaria: Medusa

c. The stinging organ of jellyfishes: Nematocyst

d. Lateral appendages in aquatic annelids: Parapodia

Q15Written answer

Match the following:

Animals Locomotory

a. Octopus

b. Crocodile

c. Catla iii.

d. Ctenoplana

Organ

i. Limbs

ii. Comb plates

iii. Tentacles

iv. Fins
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Worked solution

a. Octopus – Tentacles

b. Crocodile – Limbs

c. Catla – Fins

d. Ctenoplana – Comb plates