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Biology : Ch03 – Plant Kingdom – Assertion and Reason

Read the assertion and reason carefully to mark the correct option.

10 Random question from this chapter are displayed, you can take the quiz multiple times to cover all questions

1 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Chlorella used as a food supplement by space travellers.

Reason: Chlorella is unicellular green algae.

2 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Most algae show haplontic type of life cycle.

Reason: They show free living sporophyte

3 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Algae are useful to man.

Reason: At least half of the total CO2 fixation on earth is carried out by algae.

4 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Development of zygote into young embryo takes places within the female gametophytes in Pteridophytes

Reason: This event is a precursor to seed habit, considered an important step in evolution.

5 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: The spread of living Pteridophytes is restricted to narrow geographical region.

Reason: They require cool, damp and shady place to grow and require water for fertilization.

6 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Phaeophyceae are brown algae.

Reason: Phaeophyceae contain large amount of xanthophyll pigment called fucoxanthin which gives brown colour.

7 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Mosses along with lichens are the first organisms to colonize rocks.

Reason: They decompose rocks by scereting acid substances.

8 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Most algae show haplontic type of life cycle.

Reason: A Fucus alga shows diplontic type of life cycle.

9 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Sexual reproduction in volvox is oogamous type.

Reason: Both of fusing gamete of volvox is non flagellated and similar in size.

10 / 10

Read the assertion and reason carefully to mark the correct option out of the options given below:

Assertion: Gymnosperms are heterosporous.

Reason: They produce haploid microspores and megaspores.

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