Given below are two statements.
Statement I - Directional selection favours intermediate forms and eliminates both phenotypic extremes.
Statement II - In directional selection, more individuals acquire value other than mean character value.
In the light of above statements, select the correct option given below:
Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is
Statement I is incorrect but statement II is incorrect. correct.
Select the correct statements regarding sympathetic nervous system.
i. It consists of 31 pairs of sympathetic ganglia.
ii. It is also called cranio- sacral outflow.
iii. It controls body activities like fight and flight
iv. Pre-ganglionic fibres are long and post response. ganglionic fibres are short.
v. Adrenaline is produced towards terminal end of post-ganglionic fibres.
i and ii
iii and $v$
v and iv
ii and iv
The amount of ________ determines the pattern of ecological succession in the given area.
soil
water
light
minerals
If 10 ml of the blood sample of a healthy person, containing added anticoagulant, is subjected to centrifugation, then approximately how much will be the amount of plasma?
7 ml
5 to 5.5 ml
4 to 4.3 ml
3 ml
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