Q. No.Match each item in Column I with one in Column II and select the correct match from the codes given:
Column I
Column II
A.
Spongilla
P.
Sea-fan
B.
Euspongia
Q.
Brain coral
C.
Gorgonia
R.
Fresh Water sponge
D.
Meandrina
S.
Sea-pen
E.
Pennatula
T.
Bath sponge
Codes:
A
B
C
D
E
1.
T
R
P
Q
S
2.
R
T
P
Q
S
3.
T
R
Q
S
P
4.
R
T
S
P
Q
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
The figure shows the mouth of a chordate. It can easily be seen that:
| I. The mouth is circular | II. Jaw is absent. |
This chordate can be:
| 1. Ascidia | 2. Amphioxus |
| 3. Petromyzon | 4. Exocoetus |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| 1. Ascidia | 2. Amphioxus |
| 3. Petromyzon | 4. Exocoetus |
| I: | It is a hydraulic system used by echinoderms for locomotion, food and waste transportation, and respiration. |
| II: | The system is composed of canals connecting numerous tube feet. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
| A | B | C | D | E | F | |
| 1. | Blood vessel | Nerve cord | Trachea | Spiracles | Crop | Hearts |
| 2. | Blood vessel | Nerve cord | Trachea | Spiracles | Oesophagus | Hearts |
| 3. | Nerve cord | Blood vessel | Trachea | Spiracles | Crop | Ostia |
| 4. | Nerve cord | Blood vessel | Stomo- chord |
Ostia | Oesophagus | Spiracles |
| A: | I is found in all the molluscs. |
| B: | II is a cavity used for egestion, excretion and respiration. |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
1. A is male Ascaris and B is female Ascaris
2. A is female Ascaris and B is male Ascaris
3. A is male Wuchereria and B is female Wuchereria
4. A is female Wuchereria and B is male Wuchereria
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
I. Presence of comb plates on the surface.
II. Bioluminescence
This animal can be:
| 1. A sponge | 2. A Cnidarian |
| 3. A Ctenophore | 4. A flatworm |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
1. An attachment organ at the anterior end of tapeworms.
2. Sensory apparatus at the anterior end of nematodes.
3. The multiple compound eyes seen in aquatic helminths.
4. Food storage organ in parasitic platyhelminths.
| I: | Most sponges work rather like chimneys: they take in water at the bottom and eject it from the osculum ("little mouth") at the top. |
| II: | The inner surface is covered with choanocytes where the wave-like motion of the whip-like flagella drives water through the sponge's body. |
2. I is incorrect and II is correct.
3. I is correct and II is also correct.
4. I is incorrect and II is also incorrect.
© 2024 GoodEd Technologies Pvt. Ltd.