science class 7 Ch 1 and Ch 2

The organism which make their food themselfs from simple substances are known as

• AUTOTROPHS

• HECTEROTROPHS

• PRASITE

• SAPROPHITES

Which bacteria is there in the roots of the plants to convert atmospheric nitrogen to its solid form?

• Coronovirus

• Nipha Virus

• Treponama

• Rhizobium

Lot of bacteria live in our stomach and help in digestion.What kind of relationship is it?

• Parasitic

• Saprophytic

• Symbiotic

• None

The food synthesised by plants is stored as

• Chlorophyll

• Starch

• Chloroplasts

• None of the above

Liver secrets _____.

• Acid

• Bile Juice

• Base

• Water

Name the finger like projections present in the small intestine which helps in nutrient absorption

• Buccal cavity

• Duodenum

• Pancreas

• Villi

The enzymes present in the saliva convert

• fats into fatty acids and glycerol.

• starch into simple sugars.

• proteins into amino acids.

• complex sugars into simple sugars.

Digestion starts from _____.

• Mouth

• Stomach

• Liver

• Ribs