NEET 2018 Preparation

Do you Know Answer for this questions?

Question 1
The inherent maximum capacity of an organism to reproduce or increase in number is called as

A biotic potential
B ecosystem
C population
D ecology

Question 2
The greatest threat to genetic diversity in agricultural crops is

A extensive use of insecticides and pesticides
B extensive mixed cropping
C introduction of high yielding varieties
D extensive use of fertilizers

Question 3
If the high altitudes, birds become rare, the plants likely to disappear are

A Pinus
B Orchids
C Oak
D Rhododendrons

Question 4
Assertion: All resources are not exhaustible
Reason: Renewable resources can become non-renewable.

A Both Assertion and Reason are true and Reason is correct the explanation of Assertion
B Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion
C Assertion is true, but Reason is false
D Assertion is false, but Reason is true

Question 5
Bulliform cells differ from other cells in being
A Large, thin walled, vacuolated containing water
B Large, thick walled, contain abundant chloroplasts
C Small, thick-walled, contain starch
D Small, thin-walled, contain calcium oxalate

Question 6
Collenchyma produces
A Epidermis
B Hypodermis
C Inner cortex
D Phloem

Question 7
Lenticels are
A Scars on old stems
B Special stomata
C Aerating pores in bark
D Special stomata on hydrophytic plants

Question 8
A dicot root shows
A Large pith
B Reduced or no pith
C Endarch xylem
D Conjoint bundles

Question 9
In Cucurbita stem, the hypodermis is collenchymatous and is confined below the ridged. It is followed by parenchymatous cortex. The number of parenchyma layers in the later is
A almost the same throughout
B more below the ridged and less below the furrows
C less below the ridged and more below the furrows
D almost negligible below the furrows

Question 10
If there is a leaf at a node bearing a single branch in its axil, a transverse section of the node shows the vascular system of the main stem, then the
A Leaf trace, leaf gap, branch trace and finally the branch gap
B Branch gap, branch trace, leaf gap and finally the leaf trace
C Branch gap, leaf gap, leaf trace and finally the branch trace
D Branch trace, leaf gap, branch gap and finally the leaf trace

Do you Know Answer for this questions?