Life processes

Which of the following is the first site for the exchange of inhaled air?

• Blood capillaries of lungs

• Alveoli of lungs

• Left auricle of the heart

• Blood capillaries adjacent to body cells

Lymph does not comprise of

• Red Blood Corpuscles

• Lymphocytes

• Leucocytes

• Nitrogenous Waste

Crocodiles have ______ chambered heart.

• two

• three

• four

• none of these

An enzyme 'X' that converts starch to simple sugars is also the first enzyme to mix with food in the digestive tract. Identify 'X'

• Pepsin

• Amylase

• Lipase

• None of these

Tags

NGSS.MS-LS1-7

Which among of the following substances are reabsorbed in the nephron?

• Urea, Uric acid, Amino acid

• Glucose, Amino acids, Salts

• Glucose, Urea, Creatinine

• KCl, Urea, Glucose

How is food transported to the food vacuole of paramecium?

• By movement of cilia

• By pseudopodia

• Food vacuole directly captures the food

• By contractile vacuole

The process of obtaining food to meet the energy demands of the body is known as _____.

• Excretion

• Respiration

• Nutrition

• Circulation

Tags

NGSS.MS-LS1-7

The process that involves oxidation of food to release energy is known as _____

• Breathing

• Excretion

• Circulation

• respiration

Tags

NGSS.MS-LS1-7

what could be the possible explanation for the evolution of a four-chambered heart in mammals as opposed to a two-chambered heart in fishes?

• In fishes oxygenation of blood takes place in heart.

• Fishes have efficient gills.

• Fishes can store more energy than mammals.

• Fishes do not require energy to maintain their body temperature.

Tags

NGSS.MS-LS4-2

What happens to the unused carbohydrates produced in the plant body?

• Gets broken down and dissipated as heat.

• Transported to stem in the form of glycogen.

• Expelled from plant body through excretion.

• Stored in the form of starch for future use.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3