Class 10 ,BIOLOGY (Life processes)

The site of photosynthesis in the cells of a leaf is

• a) chloroplast

• (b) mitochondria

• (c) cytoplasm

• d) protoplasm

Tags

NGSS.HS-LS1-5

NGSS.HS-LS2-5

Which of the following events in the mouth cavity will be affected if salivary amylase is lacking in the saliva?

• (a) Starch breaking down into sugars.

• (b) Proteins breaking down into amino acids.

• (c) Absorption of vitamins.

• (d) Fats breaking down into fatty acids and glycerol.

Which region of the alimentary canal absorbs the digested food?

• (a) Stomach

• (b) Small intestine

• (c) Large intestine

• (d) Liver

The contraction and expansion movement of the walls of the food pipe is called:

• (a) translocation

• (b) transpiration

• (c) peristaltic movement

• (d) digestion

When a few drops of iodine solution are added to rice water, the solution turns blue- black in colour. This indicates that rice water contains:

• (a) fats

• (b) complex proteins

• (c) starch

• (d) simple proteins