Nutrition Transportation and Respiration in Plants and Animals Quiz

Read the given assertion and reason carefully and choose the correct option. Assertion (A): All insectivorous plants are autotrophs. Reason (R): Insectivorous plants contain chlorophyll and can perform photosynthesis to make their own food.

1. Both A and R are true, and R is the correct explanation of A.
2. Both A and R are true, but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Answer: (d) A is false but R is true.

Use the dichotomous key below to identify the plants labeled A to D: 1a. Plant is green → go to 2 1b. Plant is non-green → go to 3 2 2a. Grows on another plant and absorbs water/minerals → A. 2b. Traps insects → B. 3 3a. Grows on dead matter → C. 3b. Lacks chlorophyll, parasitic → D.

1. A–Cuscuta, B–Pitcher Plant, C–Mushroom, D–Rhizobium
2. A–Mistletoe, B–Venus Flytrap, C–Mushroom, D–Cuscuta
3. A–Venus Flytrap, B–Mushroom, C–Cuscuta, D–Rhizobium
4. A–Cuscuta, B–Sundew, C–Bracket Fungus, D–Venus Flytrap

Answer: (b) A–Mistletoe, B–Venus Flytrap, C–Mushroom, D–Cuscuta

Use the following dichotomous key to identify A, B, C, and D from the given animals. Then, choose the correct matching option. 1a. Feeds by chewing with mandibles → Go to 2 1b. Feeds by sucking or siphoning → Go to 3 2 2a. Has strong jaws and scavenges → A 2b. Uses beak to tear flesh → B 3 3a. Feeds on nectar using a long tongue → C 3b. Feeds on blood through piercing → D

1. A – Mosquito, B – Ant, C – Eagle, D – Hummingbird
2. A – Ant, B – Eagle, C – Hummingbird, D – Mosquito
3. A – Ant, B – Eagle, C – Mosquito, D – Butterfly
4. A – Eagle, B – Ant, C – Mosquito, D – Hummingbird

Answer: (b) A – Ant, B – Eagle, C – Hummingbird, D – Mosquito

Observe the diagram of the human digestive system with labelled parts 1 to 5. Match each label with the correct statement below, and choose the option where all matches are correct. A. This part absorbs water and stores undigested waste before egestion. B. This long coiled structure absorbs most nutrients using villi. C. This muscular tube uses peristalsis to transport food to the stomach. D. This part begins mechanical and chemical digestion using teeth and salivary amylase. E. This part produces hydrochloric acid and pepsin for protein digestion.

1. A–1, B–2, C–3, D–4, E–5
2. A–4, B–5, C–2, D–1, E–3
3. A–4, B–5, C–1, D–3, E–2
4. A–5, B–3, C–4, D–2, E–1

Answer: (b) A–4, B–5, C–2, D–1, E–3

Study the flowchart below that shows the steps of nutrition in Amoeba. Identify the option where the sequence or description of a step is incorrect. Step 1 → Formation of pseudopodia to surround the food particle Step 2 → Formation of food vacuole inside the nucleus Step 3 → Enzymes are secreted into the food vacuole to digest the food Step 4 → Digested food diffuses into the cytoplasm for assimilation Step 5 → Undigested food is expelled out of the body

1. Step 2 is incorrect
2. Step 3 and 4 are incorrect
3. Only Step 5 is incorrect
4. All steps are correctly described

Answer: (a) Step 2 is incorrect

Which of the following best describes the changes that occur in your body when you blow air into a balloon forcefully?

1. The diaphragm contracts and moves downward, increasing chest cavity volume.
2. The chest muscles relax and lung pressure drops, pushing air into the balloon.
3. Chest cavity volume decreases, internal pressure increases, and air is pushed out through the mouth.
4. Lung volume increases and oxygen rushes out through the windpipe.

Answer: (c) Chest cavity volume decreases, internal pressure increases, and air is pushed out through the mouth.

Identify the odd pair out based on their method of respiration.

1. Earthworm and Fish
2. Human and Cockroach
3. Grasshopper and Frog
4. Leech and Earthworm

Answer: (d) Leech and Earthworm

During a school experiment, a student wraps a transparent plastic bag around a leafy branch of a plant in sunlight and ties it tightly. After a few hours, water droplets are seen inside the bag. Another student does the same setup during the evening but finds no droplets inside. However, when tested chemically, carbon dioxide is still being released from the leaves inside the bag. Which conclusion can be drawn from the second observation?

1. Transpiration was more during the evening.
2. Photosynthesis was faster than respiration at night.
3. The plant continued respiration but not photosynthesis at night.
4. The plant stopped all gas exchange due to darkness.

Answer: (c) The plant continued respiration but not photosynthesis at night.

Observe the diagram of the human heart showing parts marked 1, 2, 3, and 4. Match them with the correct functions from the statements below: Statements: A. Receives deoxygenated blood from the body. B. Pumps oxygenated blood to the rest of the body. C. Receives oxygenated blood from lungs. D. Sends deoxygenated blood to the lungs. Which of the following options correctly matches the markings to the statements?

1. 1-A, 2-B, 3-C, 4-D
2. 1-C, 2-D, 3-A, 4-B
3. 1-A, 2-D, 3-C, 4-B
4. 1-B, 2-A, 3-D, 4-C

Answer: (c) 1-A, 2-D, 3-C, 4-B

Use the dichotomous key below to identify the correct structure based on its description. Dichotomous Key: 1a. Structure stores a liquid temporarily before it is excreted → go to 2 1b. Structure does not store, but either transports or filters liquid → go to 3 2 2a. Structure expands when filled and contracts during release → Option A 2b. Structure is a narrow tube allowing the liquid to exit the body → Option B 3 3a. Structure filters unwanted substances like excess water and salts → Option C 3b. Structure connects two organs, acting as a conduit for urine → Option D

1. A – Urinary Bladder, B – Urethra, C – Kidney, D – Ureter
2. A – Urethra, B – Urinary Bladder, C – Kidney, D – Ureter
3. A – Urinary Bladder, B – Ureter, C – Kidney, D – Urethra
4. A – Kidney, B – Urethra, C – Urinary Bladder, D – Ureter

Answer: (a) A – Urinary Bladder, B – Urethra, C – Kidney, D – Ureter