One Mark Questions Answers

ANIMAL KINGDOM

TEXT BOOK EXCERCISES

I. Choose the correct answer :

1. Find the group having only marine members.

(a) Mollusca

(b) Coelenterata

(c) Echinodermata

(d) Porifera

[Answer: (c) Echinodermata]

2. Mesoglea is present in

(a) Porifera

(b) Coelenterata

(c) Annelida

(d) Arthropoda

[Answer: (b) Coelenterata]

3. Which one of the following pairs is not a poikilothermic animal?

(a) Fishes and Amphibians

(b) Amphibians and Aves

(c) Aves and Mammals.

(d) Reptiles and Mammals

[Answer: (c) Aves and Mammals]

4. Identify the animal having four chambered heart.

(a) Lizard

(b) Snake

(c) Crocodile

(d) Calotes

[Answer: (c) Crocodile]

5. The animal without skull is

(a) Acrania

(b) Acephalia

(c) Apteria

(d) Acoelomate

[Answer: (a) Acrania]

6. Hermaphrodite organisms are

(a) Hydra, Tape worm, Earthworm, Amphioxus

(b) Hydra, Tape worm, Earthworm, Ascidian

(c) Hydra, Tape worm, Earthworm, Balanoglossus

(d) Hydra, Tape worm, Ascaris, Earthworm

[Answer: (b) Hydra, Tap worm, Earthworm, Ascidian]

7. Poikilothermic organisms are

(a) Fish, Frog, Lizard, Man

(b) Fish, Frog, Lizard, Crow

(c) Fish, Frog, Lizard, Snake

(d) Fish, Frog, Lizard, Crow

[Answer: (c) Fish, Frog, Lizard, Snake]

8. Air sacs and Pneumatic bones are seen in

(a) fish

(b) frog

(c) bird

(d) bat

[Answer: (c) Bird]

9. Excretory organ of tape worm is

(a) flame cells

(b) nephridia

(c) body surface

(d) solenocytes

[Answer: (a) Flame cells]

10. Water vascular system is found in

(a) Hydra

(b) Earthworm

(c) Star fish

(d) Ascaris

[Answer: (c) Starfish]

II. Fill in the blanks :

1. The skeletal framework of Porifera is spicules .

2. Ctenidia are respiratory organs in phylum mollusca .

3. Skates are cartilaginous fishes.

4. The larvae of an amphibian is bilaterally symmetrical.

5. Cyclostomes are jawless vertebrates.

6. Placenta is the unique characteristic feature of mammal.

7. Spiny anteater is an example for egg-laying mammal.

III. State whether true or false. If false, correct the statement :

1. Canal system is seen in coelenterates.

Answer: False.

Correct statement: Canal system is seen in porifera.

2. Hermaphrodite animals have both male and female sex organs.

Answer: True.

3. Trachea are the respiratory organ of Annelida.

Answer: False.

Correct statement: Trachea are the respiratory organ of Arthopoda.

4. Bipinnaria is the larva of Mollusca.

Answer: False.

Correct statement: Bipinnaria is the larva of star fish.

5. Balanoglossus is a ciliary feeder.

Answer: True.

6. Fishes have two chambered heart.

Answer: True.

7. Skin of reptilians are smooth and moist.

Answer: False.

Correct statement: Skin of amphibians are smooth and moist.

8. Wings of birds are the modified forelimbs.

Answer: True.

9. Female mammals have mammary glands.

Answer: True.

IV. Match the following :

PHYLUM - EXAMPLES

(A) Coelenterata - (i) Snail

(B) Platyhelminthes - (ii) Starfish

(C) Echinodermata - (iii) Tapeworm

(D) Mollusca - (iv) Hydra

Answer: A - iv, B - iii, C - ii, D – i

PHYLUM - EXAMPLES

(A) Coelenterata - Hydra

(B) Platyhelminthes - Tapeworm

(C) Echinodermata - Starfish

(D) Mollusca - Snail