Test: Introduction To Respiration - Class 10 MCQ

This is because these are sphrophytic organisms which breakdown food into simpler form outside their body.

Stomata are the tiny pores present at the leaf surface. Each stomatal pore is surrounded by two guard cells that assist in stomatal opening driven by turgidity of guard cells. When water flows in guard cells from epidermal cells, guard cells become turgid and stomata are opened. Removal of water from guard cells makes them flaccid and stomata are closed.

Peristalsis is the rythmic contraction and relaxation of muscles of alimentary canal that propels the food in downward direction.

Oxygen liberated during photosynthesis comes from split water molecules. During photosynthesis, plants absorb water and carbon dioxide. After the absorption the wate,r molecules are disassembled and convert into sugar and oxygen.

water

Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule.

The first step of aerobic respiration as well as anaerobic respiration is same and takes place in the cytoplasm of cells.

The lime water on reaction with exhaled CO₂ forms calcium hydroxide or slaked lime which is milky in color.

Salivary amylase, present in saliva, is the first digestive enzyme that gets mixed with food in oral cavity during the process of mastication and bolus formation.

Small intestine receives bile from the liver, which is normally stored in the fall bladder. It performs two functions ie., makes the food alkaline and break the fats present in food into small glodules by the process of emulsification.

Duodenum is first part of small intestine where common bile duct opens.

Nephridia are segmentally arranged excretory organs present in earthworms. On the basis of their location, three types of nephridia are found in earthworms. 

Mucus is secreted by cells of gastric gland which forms a slimy layer over inner wall of stomach.

Sphygmomanometer is the instrument used to measure the blood pressure. It is also known as blood pressure meter.

Starch test is done by iodine solution which turns colour of starch to blue-black.