Which of the following pairs are incorrectly matched?

a. Growth of roots towards the earth - Positive hydrotropism b. Bending of roots towards water - Positive hydrotropism c. Growth of pollen towards the ovule - Positive phototropism d. Winding of tendrills towards the support - Negative thigmotropism

Which of the following is a part of the forebrain?

Which of the following parts of the brain help(s) in maintaining posture and balance of the body?

Which of the following parts of the brain has motor areas that send instructions to the muscles?

The growth of pollen tube towards the ovule during the process of fertilisation in a flower is an example of

Which of the following parts in a sense organ are sensitive to a particular type of stimulus?

Nerves are wires that are distributed all over the human body. Which of the following statements is/are correct about nerves?

a. There are mainly two types of nerves. b. Cranial nerves connect all parts of the body to the brain. c. Visceral nerves connect the internal organs of the body to the spinal cord, though some also connect to brain.

Abscission in a plant is the

Which of the following statements is/are incorrect about endocrine glands?

a. Endocrine glands secrete hormones into a duct or tube. b. Endocrine glands secrete chemical messengers. c. Hormones produced by endocrine glands reach the concerned body part through the blood.

Diabetes in a person occurs due to

Auxins are responsible for which of the following?

a. Phototropic and geotropic responses in plants b. Speeding up growth in stems, but slowing down growth in roots c. Promoting the opening and closing of stomata

Which of the following statements is correct about axon?

Thyroid glands make a hormone called thyroxine. Where are these glands located?

Which of the following statements is/are true about the spinal cord?

a. Spinal cord is a cylindrical structure that is surrounded by membranes called meninges. b. Spinal cord begins in continuation with pons and extends downwards. c. Spinal cord is concerned with the conduction of muscular impulses to and from the brain.

Which of the following glands secrete the hormone that controls the development of bones and muscles?

Which of the following statements is/are correct?

a. Gibberellin hormone is involved in absission of plants. b. Auxins speed up growth in stems and roots of plants. c. Cytokinins promote the opening of stomata.

Which of the following phytohormones are involved in the growth of plants?

a. Abscisic acid b. Auxins c. Cytokinins d. Gibberellins