Paurometabolous Development in Cockroach

Q. In the paurometabolous development of a cockroach, the nymph undergoes ____ moults to become an adult.

1. 9
2. 11
3. 13
4. 14

Q.

Development of cockroach is:

1. Without metamorphosis

2. Holometabolous

3. Paurometabolous

4. Complete metamorphosis

Q. Which of the following is incorrect about Periplaneta americana?

1. The nymph undergoes moulting almost 10 times to become an adult
2. Fertilized eggs are encased in ootheca
3. Food is ground by mandibles and gizzard
4. Anterior aorta is the single large blood vessel

Q. What are external changes visible after the last molt of a cockroach nymph?

1. Anal cerci develop
2. Both fore wings and hind wings develop
3. Mandibles become harder
4. Labium develops

Q.

The next to last nymphal stage is without:

1. Wings

2. Legs

3. Wing pads

4. Compound eyes

Q. In the paurometabolous development of a cockroach, the nymph undergoes ____ moults to become an adult.

1. 9
2. 11
3. 13
4. 14

Q.

Assertion: A tadpole deprived of a thyroid gland fails to metamorphose into an adult.
Reason: Thyroxine stimulates tissue differentiation and therefore affects the metamorphosis of tadpoles into an adult.

1. If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

2. If both Assertion and Reason are correct but the Reason is not the correct explanation of Assertion.

3. If Assertion is correct but Reason is incorrect.

4. If Assertion is incorrect but Reason is correct.

Q. Larva of mosquito is called as

1. Caterpillar
2. Imago
3. Wriggler
4. Both A and C

Q. The development of adult characteristics in a moulting insect is promoted by

1. Ecdysone
2. Pheromone
3. Thyroxine
4. None of the above

Q. How many moulting occur, from egg laying to the development of adult cockroach?

1. 10 - 12 times
2. 9 times
3. 6 times
4. 3 - 4 times

Q.

Development of cockroach is:

1. Holometabolous

2. Ametabolism

3. Paurometabolous

4. None of the above

Q. Choose the correct answer from the allternatives given.
In which of these, development and metamorphosis of eggs of Periplenata americana takes place

1. Ovary
2. Oothecal chamber
3. Ootheca
4. Spermatheca

Q. Assertion : The development in cockroach is heterometabolous metamorphosis.
Reason : Young ones resemble the adults in all characters.

1. Both Assertion and Reason are true and Reason is a correct explanation of Assertion
2. Both Assertion and Reason are true but Reason is not a correct explanation of Assertion
3. Assertion is true but Reason is false
4. Both Assertion and Reason are false
5. Assertion is false but reason is true.

Q. What external changes are visible after the last moult of a cockroach nymph?

1. Anal cerci develops
2. Both forewings and hind wings develop
3. Labium develops
4. Mandibles become harder

Q. Juvenile of cockroach is known as

1. Tadepole
2. Amebocyte
   
3. Nymph
4. Naid

Q.

The next to last nymphal stage is without:

1. Wings

2. Legs

3. Wing pads

4. Compound eyes

Q. What are external changes visible after the last molt of a cockroach nymph?

1. Mandibles become harder
2. Anal cerci develop
3. Both fore wings and hind wings develop
4. Labium develops

Q.

The next to last nymphal stage is without:

1. legs

2. wings

3. wing pads

4. compound eyes

Q. How many times do nymphs moult to reach the adult form of cockroach?