CHAPTER -6 LIFE PROCESS

If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?

• Proteins breaking down into amino acids

• Starch breaking down into sugars

• Fats breaking down into fatty acids and glycerol

• Absorption of vitamins

Tags

NGSS.MS-LS1-7

A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains

• complex proteins

• simple proteins

• fats

• starch

Tags

NGSS.MS-PS1-2

In which part of the alimentary canal food is finally digested?

• Stomach

• Mouth cavity

• Large intestine

• Small intestine

Tags

NGSS.MS-LS1-7

Choose the function of the pancreatic juice from the following

• trypsin digests proteins and lipase carbohydrates

• trypsin digests emulsified fats and lipase proteins

• trypsin and lipase digest fats

• trypsin digests proteins and lipase emulsified fats

During respiration exchange of gases take place in

• trachea and larynx

• alveoli of lungs

• alveoli and throat

• throat and larynx

Tags

NGSS.HS-LS1-7

Single circulation i.e., blood flows through the heart only once during one cycle of passage through the body, is exhibited by

• Labeo, Chameleon, Salamander

• Hippocampus, Exocoetus, Anabas

• Hyla, Rana, Draco

• Whale, Dolphin, Turtle

The blood leaving the tissues becomes richer in

• carbon dioxide

• water

• heamoglobin

• oxygen

Tags

NGSS.HS-LS1-7

Which of the following is an incorrect statement?

• Organisms grow with time

• Organisms must repair and maintain their structure

• Movement of molecules does not take place among cells

• Energy is essential for life processes

The opening and closing of the stomatal pore depends upon

• oxygen

• temperature

• water in guard cells

• concentration of CO2 in stomata

Select the correct statement

• Heterotrophs do not synthesise their own food

• Heterotrophs utilise solar energy for photosynthesis

• Heterotrophs synthesise their own food

• Heterotrophs are capable of converting carbon dioxide and

  water into carbohydrates