The energy derived from the food we eat is stored in our body in the form of

Which of the following statements is/are correct?

a. In saprophytic nutrition, the organisms obtain their food from dead and decaying organic matter of dead plants, dead animals and other decaying matter. b. In parasitic nutrition, an organism (parasite) lives on the body surface or inside the body of another organism (known as a host) to derive its nutrition. c. In holozoic nutrition, the organism undergoes the process of internalization (ingestion) and internal processing of liquids or solid food particles.

Which of the following glands are associated with and form a part of the human digestive system?

a. Salivary glands b. Liver c. Pineal gland d. Pancreas

Which of the following statements is/are correct?

a. All the gaseous exchange takes place in leaves through stomata for the purpose of photosynthesis. b. The plant closes the stomata when it does not need carbon dioxide for photosynthesis as large amount of oxygen is lost through them. c. The opening and closing of stomatal pore is a function of guard cells.

Which of the following is/are autotrophic?

a. Grass b. Algae c. Yeast d. Parmecium

Which of the following pairs is matched correctly?

Food is churned in the stomach for about three hours and broken into a semi-solid paste. The tubular glands present in the stomach secrete gastric juice. Which of the following substances are contained in this gastric juice?

Which of the following statements is/are correct?

a. Dentine is the hardest material in our body. b. Inside the dentine is the pulp cavity that contains nerve cells and blood vessels. c. The formation of cavities in teeth due to acid-forming bacteria is called plaque.

___________ is the site of aerobic respiration in cells.

Which of the following statements is/are correct?

a. Rapid breathing supplies more oxygen to body cells for producing more energy. b. Haemoglobin carries oxygen required for respiration. c. Haemoglobin has more affinity for carbon monoxide than oxygen.

Which of the following statements is/are correct?

a. Respiration breaks food by oxidising it and releasing energy. b. Energy produced during respiration is stored in ADP molecules. c. ADP cells have a high energy content.

Which of the following statements is incorrect?

Which of the following help(s) in the coagulation or clotting of blood in a cut or a wound?

Which of the following statements is/are correct?

a. Xylem vessel is a non-living tube which runs like a drainpipe through the plant. b. Tracheids are long, thin, spindle-shaped cells which are the only water-conducting tissues in all plants. c. Xylem translocates food and hormones in plants.

Which of the following carries deoxygenated blood to the lungs?

Which of the following statements is/are correct?

a. The human heart has four chambers, namely the ventricles and the atria. b. The atria pump blood into various organs with high pressure. c. A sheath of tissue called pericardium separates the chambers of the heart.

Which of the following statements is incorrect?

Using which of the following methods do plants get rid of their waste products?

a. Through stomata b. Through lenticles c. Shedding of leaves d. Felling of fruits e. Gums and resins

Which of the following statements is/are correct?

a. The renal vein brings in the dirty blood containing the waste substances into the kidneys. b. Ureters are the tubes that carry urine from the kidneys to the bladder. c. Waste material like urea remains in the Bowman's capsule.

Which of the following are produced during anaerobic respiration in unicellular fungus?

a. Ethanol b. Carbon dioxide c. Energy d. Water

Match the following:

The gaseous exchange in human lungs during the process of respiration takes place in