Q. No.Respiration in insects is called direct because
1.
the cells exchange O2/CO2 directly with the air in the tubes
2.
the tissues exchange O2/CO2 directly with coelomic fluid
3.
the tissues exchange O2/CO2 directly with the air outside through body surface
4.
tracheal tubes exchange O2/CO2 directly with the haemocoel with tissues which then exchange with tissues
Match the following.
|
Column I |
Column II |
|
A. Phallomere B. Gonopore C. Spermatophore D. Ovarioles |
1. Chain of developing ova 2. Bundles of sperm 3. Opening of the ejaculatory duct 4. The external genitalia |
Codes
| Options: | A | B | C | D |
| 1. | 3 | 4 | 2 | 1 |
| 2. | 4 | 3 | 2 | 1 |
| 3. | 4 | 2 | 3 | 1 |
| 4. | 2 | 4 | 3 | 1 |
Match the following.
|
Column I |
Column II |
|
A. Hermaphrodite B. Direct development C. Chemoreceptor D. Blood gland in earthworm |
1. Produces blood cells and haemoglobin 2. Testis and ovary in the same animal 3. Larval form absent 4. Sense of chemical substances |
| Options: | A | B | C | D |
| 1. | 2 | 3 | 4 | 1 |
| 2. | 3 | 2 | 4 | 1 |
| 3. | 1 | 3 | 2 | 4 |
| 4. | 2 | 4 | 3 | 1 |
Which one of the following statements is true for cockroach?
1. The number of ovarioles in each ovary are ten
2. The larval stage is called caterpillar
3. Anal styles are absent in females
4. They are ureotelic
In cockroach, identify the parts of the foregut in correct sequence:
| 1. | Mouth → Oesophagus → Pharynx → Crop → Gizzard |
| 2. | Mouth → Crop → Pharynx → Oesophagus → Gizzard |
| 3. | Mouth → Gizzard → Crop → Pharynx → Oesophagus |
| 4. | Mouth → Pharynx → Oesophagus → Crop → Gizzard |
Match the following columns with reference to cockroach and select the correct option:
| Column - I | Column - II |
| (a) Grinding of | (i) Hepatic caeca the food particles |
| (b) Secrete gastric | (ii) 10th segment juice |
| (c) 10 pairs | (iii) Proventriculus |
| (d) Anal cerci | (iv) Spiracles |
| (v) Alary muscles |
| Options: | (a) | (b) | (c) | (d) |
| 1. | (iii) | (i) | (iv) | (ii) |
| 2. | (iv) | (iii) | (v) | (ii) |
| 3. | (i) | (iv) | (iii) | (ii) |
| 4. | (ii) | (iii) | (i) | (iv) |
Which one of the following structure in Pheretima is correctly matched with its function?
1. Typhlosole - storage of extra nutrients
2. Clitellum - secretes cocoon
3. Gizzard - absorbs digested food
4. Setae - defence against predators
Which one of the following is the true description of an animal concerned?
| 1. | Cockroach – 10 pairs of spiracles (2 pairs on thorax and 8 pairs on abdomen) |
| 2. | Earthworm – The alimentary canal consists of a sequence of pharynx, oesophagus, stomach, gizzard, and intestine |
| 3. | Frog – Body divisible into three regions -head, neck, and trunk |
| 4. | Rat – Left kidney is slightly higher in position than the right one |
Sense organs of cockroach include
1. Compound eyes
2. Johnston's organ
3. Osphradium
4. Spiracles
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