Write the term for the pressure exerted by the cell contents on the cell wall.

Given below is the diagram of a turgid plant cell: Copy the diagram and label Vacuole and Plasma membrane.

(a) Name the fluid present between the meninges in spinal cord. (b) What is its function?

(a) Explain the term 'Synapse'. (b) Name the neurotransmitter that allows the transmission of impulses across the synapse.

A 17-year-old girl has irregular menstrual cycles and symptoms of adrenal virilism. (a) Hypersecretion of which hormone causes this condition? (b) Mention one symptom of this condition.

How are the Cytons and Axons of neurons arranged in the following? (a) Cerebrum (b) Spinal cord

Sara placed a healthy potted plant in a dark room for 48 hours to perform an experiment on photosynthesis. She plucked one of the leaves and tested it for starch. The leaf did not turn blue-black on adding Iodine solution. (a) Why was the plant placed in the dark for 48 hours? (b) What is the significance of boiling the leaf in alcohol?

(a) Who proposed the theory of Natural Selection? (b) Name the organism which was used as an example to explain Industrial Melanism.

Differentiate between Mitosis in plant cell and animal cell based on Cytokinesis.

Two well-watered, identical plants were placed in brightly lit rooms at different temperatures — one at 15°C and the other at 38°C. The plant in the warmer room showed wilting by the end of the day. (a) Which plant phenomenon resulted in the wilting of the leaves? (b) Mention the factor of the phenomenon that is being tested.

What is the role of the following? (a) Leydig cells (b) Seminiferous tubules

A 28-year-old pregnant lady goes to a gynecologist for a check-up. Her doctor explains that there is normal growth of the foetus and the placenta is functioning well. (a) Mention one function of the placenta. (b) What connects the placenta to the foetus?