Free Plant Kingdom (Weekly Quiz: 3) NEET Biology Questions & Answers with Detailed Explanation & Full Review

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Question-1

Dominance of chlorophyll 'a' and 'b', pyrenoids and starch as stored food are found in

(a)

(b)

(c)

(d)

Question-2

Which of the following is responsible for peat formation?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Among the bryophytes Sphagnum accounts by far the most important place economically. It is popularly called bog moss or peat moss. It is perennial and its growth continues year after year. Older portions undergo death but do not decompose due to secretion of acid that accounts for the antibacterial and antifungal actions. The increasing mass of dead remains accumulate year after year and form a compact dark coloured mass rich in carbon which is called peat. Peat is used as fuels. Paraffin, acetic acid, peat tar and ammonia are formed as by-products of peat obtained for industrial uses.

Question-3

Algae have cells made up of

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Majority of algae (eukaryotes) possess a definite cell wall containing cellulose and other carbohydrates. In algal cell wall, different chemical components are present which vary widely among different groups (e.g., xylan, mannan, galactan, alginic acid, silica, agar, pectin, carrageenin, etc.). Cell wall of blue-green algae is made up of micro-peptides (proteins). This micro-peptide is not found in eukaryotic algae.

Question-4

Fertilization in brown algae occurs in

(a)

(b)

(c)

(d)

Question-5

Which of the following is true about bryophytes?

(a)

(b)

(c)

(d)

Explanation:

Answer: (d)

Bryophytes are green photosynthetic and thalloid structures where the plant body lacks true root, stem and leaves. Instead of roots, rhizoids are present for attachment and absorption purpose. They have motile sperms and so they need water for fertilization. Archegonia evolved for the first time in bryophytes in the plant kingdom. It is a flask shaped structure with swollen base called venter and upper elongated neck. The venter contains a venter canal cell and an egg cell. It is surrounded by one celled thick sterile jacket layer.

Question-6

Blue-green algae belong to

(a)

(b)

(c)

(d)

Question-7

Reindeer moss is the common name of –

(a)

(b)

(c)

(d)

Question-8

Assertion:
Bryophytes are called amphibian of plant kingdom.
Reason:
These plants live in soil but are dependent on water for sexual reproduction.

(a)

(b)

(c)

(d)

Question-9

The heterosporous pteridophyte belonging to the class lycopsids is

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Selaginella is a member of lycopsida, which produce two kinds of spores-macro (large) and micro (small) spores. Thus, known as heterosporous pteridophytes.

Question-10

Cycas and Adiantum resemble each other in having

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Cycas is a gymnosperm and Adiantum is a pteridophyte. Cambium and seeds are absent in pteridophytes, while vessels are absent in both of these two groups. Both Cycas and Adiantum resemble each other in having multi-ciliated sperms.

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Quiz 152

Biotechnology Principles And Processes

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