Life Processes - 1 (Class X)
Tests knowledge of nutrition, respiration, transportation, and excretion processes in plants and animals
Questions
Which of the following statements is/are correct?
a. The left side of the heart pumps blood only into the lungs.
b. The two sides of the heart are separated completely by a partition.
c. Arteries carry blood from heart to body organs.
- Only a
- Only b
- Only c
- Both b and c
- Both a and b
Match the following:
| Name of the enzymes | Functions |
| a. Enzyme amylase | 1. It breaks down the emulsified fats. |
| b. Enzyme trypsin | 2. It digests the proteins. |
| c. Enzyme lipase | 3. It breaks down the starch. |
- a - 3, b - 1, c - 2
- a - 3, b - 2, c - 1
- a - 2, b - 3, c - 1
- a - 2, b - 1, c - 3
- a - 1, b - 2, c - 3
___________ contains glomeruli, which filter the blood passing through it.
- Bowman's capsule
- Tubule
- Ureter
- Urethra
- Bladder
Match the following:
| a. Renal artery | 1. It carries impure blood into the kidneys. |
| b. Renal vein | 2. They are the tubes that carry urine from kidneys to bladder. |
| c. Ureters | 3. It carries pure blood out of the kidneys. |
- a - 1, b - 3, c - 2
- a - 1, b - 2, c - 3
- a - 2, b - 1, c - 3
- a - 3, b - 1, c - 2
- a - 2, b - 3, c - 1
Match the following:
| a. Arteries | 1. They are thin-walled and extremely narrow tubes or blood vessels which help in exchanging various materials between the blood and the body cells. |
| b. Capillaries | 2. They are the thick-walled blood vessels which carry blood from the heart to all parts of the body. |
| c. Veins | 3. They are the thin-walled blood vessels which carry blood from all parts of the body back to the heart. |
- a - 2, b - 3, c - 1
- a - 1, b - 2, c - 3
- a - 1, b - 3, c - 2
- a - 2, b - 1, c - 3
- a - 3, b - 1, c - 2
Raphides are a form of plants' wastes that can be found in their
- stems
- leaves
- fruits
- bark
- roots
Which of the following statements is/are correct?
a. Aerobic respiration takes place in the absence of oxygen.
b. Mitochondrion is the site for aerobic respiration in cells.
c. Pyruvate is converted to ethanol and carbon dioxide or lactic acid during aerobic respiration.
- a only
- b only
- c only
- a and c
- a and b
Which of the following statements is/are correct?
a. All plants are autotrophs.
b. Bacteria are not autotrophic.
c. Autotrophs make their food with inorganic substances.
- Only a
- Only b
- Only c
- Both a and b
- Both b and c
The stomach walls contain three tubular glands that secrete gastric juice. Gastric juice contains which of the following substances?
a. Hydrochloric acid
b. Enzyme pepsin
c. Enzyme trypsin
d. Mucus
- Only a, b and d
- Only a, b and c
- Only a, c and d
- Only b, c and d
- All of the above
Which of the following is/are elongated cell(s) responsible for water transport?
- Parenchyma
- Fibres
- Tracheids
- Sieve tubes
- Endodermis
The upper chambers of the heart are called
- aorta
- vena cava
- atria
- pericardium
- ventricles
Which of the following statements is/are false?
a. The gaseous exchange in plants takes place through the stomata in leaves.
b. In addition to leaves, stomata are also present in the roots of the plant.
c. In most broad-leaved plants, stomata occur only in the lower surface of the leaf.
- Only a
- Both a and b
- Only b
- Both b and c
- Only c
______ use(s) holozoic mode of nutrition.
- Roundworms
- Tapeworms
- Plasmodium
- Amoeba
- Fungi
_______ form(s) the floor of the chest cavity in humans.
- Lungs
- Tracheae
- Bronchi
- Diaphragm
- Larynx
Where does the whole process of anaerobic respiration take place?
- Mitochondria
- Ribosomes
- Cytoplasm
- Nucleus
- Endoplasmic reticulum