Cerebrum (a major part of forebrain) is the main thinking part of brain. It has sensory, motor and association areas.

Correct Option: C

Cerebrum (a major part of forebrain) is the main thinking part of brain. It has sensory, motor and association areas.

Darwin (1881) found that bending movement of coleoptile of canary grass (Phalaris canariensis) was due to exposure of tip to unilateral light. Boysen-Jensen (1910, 1911) found that the tip produces a chemical which was later named Auxin.

Correct Option: B

Darwin (1881) found that bending movement of coleoptile of canary grass (Phalaris canariensis) was due to exposure of tip to unilateral light. Boysen-Jensen (1910, 1911) found that the tip produces a chemical which was later named Auxin.

In case the ovum (female) fertilises with a sperm (male) carrying X-chromosome the zygote develops into a female (XX) and the fertilisation of ovum with Y-chromosome carrying sperm results into a male offspring (XY). Thus, it is evident that it is the genetic makeup of the sperm (male/father) that determines the sex of the child.

Correct Option: B

In case the ovum (female) fertilises with a sperm (male) carrying X-chromosome the zygote develops into a female (XX) and the fertilisation of ovum with Y-chromosome carrying sperm results into a male offspring (XY). Thus, it is evident that it is the genetic makeup of the sperm (male/father) that determines the sex of the child.

120 days

Correct Option: C

120 days

Mostly dicotyledonous plants exhibit an increase in girth called the secondary growth. The tissues involved in secondary growth are the two lateral meristems : vascular cambium and cork cambium.

Correct Option: C

Mostly dicotyledonous plants exhibit an increase in girth called the secondary growth. The tissues involved in secondary growth are the two lateral meristems : vascular cambium and cork cambium.