PART - 2 - Unit V : CH - 14 Breathing and Exchange of Gases — BIOLOGY STD 11 Science — Question

The cell found in the apical cell keeps dividing throughout its life? So, what are they called?

A farmer is using a substance called 2, 4-D in his field growing wheat crop. Mention the purpose of using this substance in the field.

Where does the electron transport system take place in respiration?

How many fingers are there in the hind legs of a frog?

Mention two uses of cilia to Paramoecium.

During swallowing of food, the wind pipe are closed by a flap-like structure. Identify it.

Plant growth substances (PGS) have innumerable practical applications. Name the PGS you should use to: Inhibit seed germination.

Which is the largest gland in our body? Name the chemical secreted by this gland.

What is the number of chromosomes in the cells of endometrium?

The human endoskeleton consists of two parts. Name them with number of bones in each.