Phylum Cnidaria

Q.

What are the six functions of lipids?

Q.

What animal has 32 brains?

Q.

Animals without a backbone are called………………

Q.

What are the types of neuroglia?

Q. The below characters belong to which class?
(i) Four pairs of gills covered by an operculum on each side.
(ii) Skin is covered with cycloid/ctenoid scales.
(iii) Air bladder is present which regulates buoyancy.
(iv) Mostly oviparous and development is direct.

1. Osteichthyes
2. Chondrichthyes
3. Cyclostomata
4. All of these

Q. Skeleton of corals is composed of

1. Sodium carbonate
2. Calcium carbonate
3. Calcium bicarbonate
4. Sodium bicarbonate

Q.

What are sponges ( diploblastic or triploblastic)?

Q.

What is meant by pleomorphic ?

Q. Which of the following statements regarding coelenterates are wrong?
I. Cnidocytes are present on the tentacles and on the body
II. They are diploblastic and have cellular level of organisation
III. Polyp forms are free-swimming
IV. They exhibit metagenesis
V. Polyps produce medusae sexually and medusae form polyps asexually

1. II and IV only
2. III and V only
3. II, III and V only
4. I, II and III only

Q. Match the following:

Column I	Column II
A. Choanocytes	I. Platyhelminthes
B. Cnidoblasts	II. Ctenophora
C. Flame cells	III. Porifera
D. Comb plates	IV. Coelenterata

1. A-II, B-I, C-IV, D-III
2. A-I, B-II, C-III, D-IV
3. A-III, B-IV, C-I, D-II
4. A-II, B-IV, C-I, D-III

Q.

Miracidium is the larval stage of

1. Tapeworm

2. Roundworm

3. Pinworm

4. Liver fluke

Q.

Nematocyst are found in?

Q. Match the following and choose the correct options.

	Column I		Column II
A.	Physalia	i.	Sea anemone
B.	Meandrina	ii.	Sea fan
C.	Gorgonia	iii.	Brain coral
D.	Adamsia	iv.	Portuguese man-of-war

1. A-iv, B-iii, C-ii, D-i
2. A-iv, B-ii, C-iii, D-i
3. A-iii, B-ii, C-i, D-iv
4. A-ii, B-iii, C-i, D-iv

Q.

Name an entity that shows true regeneration?

Q.

What is meant by mucilage?

Q. In metagenesis of cnidarian like Obelia, the polyps and medusae are respectively

1. 2n and 2n
2. n and 2n
3. n and n
4. 2n and n

Q. In Hydra, egestion of undigested food and excretion of nitrogenous waste occurs through

1. mouth and anus, respectively
2. mouth and body surface, respectively
3. anus and body wall, respectively
4. mouth and tentacles, respectively

Q. Corals belong to the phylum

1. Protozoa
2. Porifera
3. Ctenophora
4. Cnidaria

Q.

Nereis is an aquatic annelid. Its parapodia help it_________

Q.

Are humans asymmetrical?

Q. The first, second and third moulting of Ascaris larvae occur in

1. soil, alveoli and lung
2. soil, lung and intestine
3. soil, lung and liver
4. liver, soil and stomach

Q.

Given below are types of cells present in some animals. Which of the following cells can differentiate to perform different functions?

(a) chanocytes

(b) interstitial cells

(c) gastrodermal cells

(d) nematocytes

Q.

The eggs of Ascaris are called mammillated eggs. Justify?

Q. One of the unique characteristics of Coelenterata is

1. bioluminescence
2. flame cells
3. being hermaphrodite
4. cnidoblast

Q.

What is the difference between a medusa and polyp?

Q.

Read the following statements concerning the villi of the small intestine.

(i) They have very thin walls.

(ii) They have a network of thin and small blood vessels close to the surface.

(iii) They have small pores through which food can easily pass.

(iv) They are finger-like projections.

Identify those statements which enable the villi to absorb digested food.

1. (i), (ii) and (iv)

2. (ii), (iii) and (iv)

3. iii) and (iv)

4. (i) and (iv)

Q.

What is the anatomy of a frog?

Q. Digestion pattern in

1. Porifera and Coelenterata is extracellular and intracellular, respectively
2. Porifera and Coelenterata is both intracellular and extracellular
3. Porifera and Coelenterata is intracellular and extracellular, respectively
4. Porifera is intracellular and in Coelenterata, it is both intra and extracellular

Q. Largest animal cell is that of

1. Ostrich
2. Duck
3. Human
4. Hen.

Q. In Hydra, waste material of food digestion and nitrogenous waste material removed from __________ and _________ respectively.

1. Body wall and body wall
2. Mouth and mouth
3. Mouth and body wall
4. Mouth and tentacles