Life Processes_Unsolved Paper
Chapter: Life Processes | Topic: Nutrition Autotrophic and Heterotrophic
LIFE PROCESSES_UNSOLVED PAPER
Topic: Nutrition Autotrophic and Heterotrophic
Q1. Which mode of nutrition is found in green plants?
- Heterotrophic
- Saprophytic
- Autotrophic
- Parasitic
Q2. Which of the following raw materials is directly absorbed from the atmosphere for photosynthesis?
- Oxygen
- Nitrogen
- Carbon Dioxide
- Water
Q3. Which pigment is essential for trapping sunlight during photosynthesis?
- Melanin
- Haemoglobin
- Chlorophyll
- Carotene
Q4. Which of the following organisms shows heterotrophic nutrition?
- Mango Tree
- Grass
- Neem Plant
- Human Being
Q5. A mushroom obtains food from dead and decaying organic matter. This is an example of:
- Autotrophic nutrition
- Holozoic nutrition
- Saprophytic nutrition
- Parasitic nutrition
Q6. Which of the following is the correct sequence during nutrition in Amoeba?
- Absorption → Digestion → Ingestion → Egestion
- Ingestion → Digestion → Absorption → Assimilation → Egestion
- Digestion → Ingestion → Egestion → Absorption
- Assimilation → Digestion → Ingestion → Absorption
Q1. Define autotrophic nutrition. Mention two organisms that show this mode of nutrition.
Q2. Differentiate between autotrophic and heterotrophic nutrition using any two points.
Q3. State the role of chlorophyll and sunlight in photosynthesis.
Q4. A student observes that a potted plant kept in complete darkness for several days becomes weak. Explain the reason based on nutrition.
Q5. Why is carbon dioxide considered an essential raw material for photosynthesis?
Q6.During lunch break, students eat food prepared at home while trees in the school garden prepare their own food. Compare the mode of nutrition in both cases.
Q1. Explain the process of autotrophic nutrition in green plants. Describe the role of chlorophyll, sunlight, carbon dioxide, and water.
Q2. Describe heterotrophic nutrition. Explain any three different types of heterotrophic nutrition with suitable examples.
Q3. Compare autotrophic and heterotrophic nutrition on the basis of food source, chlorophyll requirement, dependence on other organisms, and examples.
Q1. A science teacher places two identical potted plants under different conditions:
Plant A receives sunlight, water, and carbon dioxide.
Plant B receives water but is covered with a black box that blocks sunlight.
After one week, compare the condition of both plants and explain the effect on their mode of nutrition.
Q2. A farmer notices that the leaves of some crop plants have turned yellow due to a lack of chlorophyll.
Explain how this change affects photosynthesis and the overall growth of the plants.
Q3. During a school science exhibition, two students present different organisms:
Student A displays a money plant growing in sunlight.
Student B displays a mushroom growing on a piece of decaying wood.
Compare the mode of nutrition of both organisms and explain how each obtains its food.