Subject

Biology

Class

NEET Class 12

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NEET Biology Solved Question Paper 2009

Multiple Choice Questions

61.

Streptomycin is obtained from

Streptomyces griseus
S. aureofaciens
S. venezuelae
S. ramosus

62.

DNA element with ability to change position is called

cistron
transposon
intron
recon

63.

Initiation codon is

64.

DNA mutiplication is called

translation
replication
transduction
transcription

65.

Which is always present in photochemical smog?

O₃
CO₂
SO₂
CH₄

66.

The soil which is transported by wind is known as

colluvial
eolian
aluvial
glacial soil

67.

Lichen is the pioneer vegetation on which succession?

Hydrosere
Lithosere
Psammosere
Xerosere

68.
In Pinus, male cone bears a large number of

ligules

anthers

micro- sporophylls

mega- sporophylls

micro- sporophylls

Micro-sporophylls or mega- sporophylls are the leaf like structures on which microsporangia and megasporangia are borne on the same plant of Pinus.

(a) Male cones (microstrobili)- are small

(b) Female cones (ovulate strobili)- are large

Each male cone consists of an elongated axis containing number of micro- sporophylls. Underside of same develops 2 microsporangia and gets filled with microspores (pollen grains).

Anther or microsporangium is the male reproductive structure of angiosperm.

Ligule, is a tongue- like membranous outgrowth, present on upper surface, near the base of the microphyllous leaf in pteridophytes.