Science [1 Mark Questions]

1. Phloem.
2. Xylem.

1. Phloem.
2. Xylem.

Translocation.

Phloem.

Heart beat: One complete contraction and relaxation of the heart is called a heart beat. The usual heart beat rate at rest is 72 times/ minute.

Capillaries.

1. Respiration.
2. Photosynthesis.

1. Water.
2. Food.

Chlorophy ll.

1. Glucose.
2. Starch.

Lungs.

Autotrophs are those organisms which can make their own food from carbon-dioxide and water.
Example: Green Plants.

Amoeba has no fixed place for egestion. The undigested food gets collected inside amoeba, then its cell membrane suddenly ruptures and the undigested food is thrown out of the body of amoeba.

Hypertension.

Saprotrophic.

Blood and lymph.

Chlorophyll.

Green.

Chlorophy ll.

Amoeba engulfs the food particles with the help of finger like projections called pseudopodia.

Earthworm.

1. Oxygen.
2. Carbon-dioxide.

Small intestine.

Trypsin: It is a pancreatic enzyme present in the pancreatic juice. Its function is to digest the proteins.

Trachea.

Plants obtain food by a process called photosynthesis.

Root hair.

Ureters.

The heart beats faster when a person runs for a while because the body needs more energy under these conditions.

When there is a kidney failure then dialysis machine is used. Dialysis cleans the blood of a person by separating the waste substance (urea) from the blood.

Large intestine.

Urea.

Oxygen and carbon-dioxide.

Alveoli.

Pepsin.

Saliva.

Bronchi.

Capillaries.

Glomerulus present in kidneys.

Guard cells.

Plant kept in continuous light will live longer because it will be able to produce oxygen required for its respiration by the process of photosynthesis.

Alveoli.

1. Right side.
2. Left side.

Amoeba.

Ventricles.

Atria.

If mucus is not secreted, hydrochloric acid will cause the erosion of inner lining of stomach leading to the formation of ulcers in the stomach.

Phloem.

1. Herbivores.
2. Carnivores.
3. Omnivores.