Plant Kingdom–III Biology Test Series for NEET - 2020

Test Preparation on Plant Kingdom III - Biology Test Series for NEET - 2020

In which plant largest sperms (antherozoids) are found

1Cycas
2Pinus
3Mango
4Sunflower

(a) The sperms of cycas are largest (300m) in nature and
visible to naked eye.

Coralloid roots of Cycas are useful in

1N2-fixation
2Absorption of water
3Transpiration
4Fixation

(a) Anabaena, Nostoc and bacteria are found in
coralloid roots hence it helps in fixation absorption of
nitrogen.

Which one of the following is a living fossil

1Saccharomyces
2Spirogyra
3Cycas
4Moss

(c) Living fossil is that organism whose relatives have
become extinct (Fossilised) and has a restricted
distribution, therefore, threatened to become extinct.

Top-shaped multiciliate male gametes, and the mature seed
which bears only one embryo with two cotyledons, are
characteristic features of

1Polypetalous angiosperms
2Gamopetalous angiosperms
3Conifers
4Cycads

Negatively geotropic roots are found in

1Colocasia
2Cycas
3Cactus
4Coleus

Identify the pair that exhibit circinate vernation

1Psilotum and Riccia
2Equisetum and Selaginella
3Nephrolepis and Cycas
4Riccia and Nephrolepis

Cycas revoluta is

1Date Palm
2Sea Palm
3Royal Palm
4Sago Palm

(d) Sago palm rich in starch.

Wood of Cycas is

1Monoxylic and manoxylic
2Manoxylic and polyxylic
3Diploxylic
4Monoxylic

(b) Monoxylic and Polyxylic : The wood is loose, soft,
nonporous commercially useless, parenchymatous
tissue more, vascular tissue less pith and cortex broad,
medullary rays wide e.g., cycas wood.