Free Plant Kingdom (Daily Quiz: 4) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Free Plant Kingdom (Daily Quiz: 4) Time:

Question-1

Elater mechanism for spore dispersal is exhibited by

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Marchantia is a liverwort in which the sex organs are borne on disc shaped 8-lobed receptacles borne at the tip of vertical gametophores. Sperms are attracted to opened archegonia by proteins and K+ salts. Fertilization produces a parasitic sporophyte made of foot, seta and capsule. The capsule encloses sporocytes and elaters. These elaters show twisting movements due to spiral bands of thickenings and this leads to liberation and dispersal of spores. In Riccia elaters are absent and in Funaria peristome teeth help in spore dispersal.


Question-2

Pteridophytes differ from mosses/bryophytes in possessing

(a)

(b)

(c)

(d)

Explanation:

Answer: (a)

Well developed vascular system is present in the members of pteridophytes but absent in mosses as the plant body is sporophyte which is distinguished into true root, stem and leaves.


Question-3

Monoecious plant of Chara shows occurrence of

(a)

(b)

(c)

(d)


Question-4

An alga, very rich in protein, is

(a)

(b)

(c)

(d)

Explanation:

Answer: (b)

Chlorella is a unicellular green alga that contains high percentage of proteins, lipids and most of the known vitamins (carotene, riboflavin, vitamin B 12 , choline etc) and grows more quickly than Porphyra, so scientists are doing research to obtain food from it. The nutritional value is comparable to the mixture of soybeans and spinach.


Question-5

The algae rich in proteins and used as food by space travellers is

(a)

(b)

(c)

(d)


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