Life Processes in Plants Practice Questions - Class 7 Science | Kedovo | Kedovo
Practice Questions
Life Processes in Plants
1
easySubjective
<p>Recall the word equation for photosynthesis.</p>
2
easySubjective
<p>Identify the gas released during respiration in plants.</p>
3
easySubjective
<p>Describe the role of stomata in plants.</p>
4
easySubjective
<p>Apply your understanding of photosynthesis to explain why plants appear green. What specific substance is responsible, and how does it interact with light?</p>
5
easySubjective
<p>Demonstrate how you would test a leaf for the presence of starch. Detail the steps involved and the expected result if starch is present.</p>
6
easySubjective
<p>Name the green pigment present in plant leaves and explain its role in photosynthesis.</p>
7
easySubjective
<p>List the raw materials required for photosynthesis.</p>
8
easySubjective
<p>Describe how plants obtain carbon dioxide from the environment.</p>
9
easySubjective
<p>Recall the word equation for respiration.</p>
10
easySubjective
<p>Explain why leaves are referred to as the 'food factories' of plants.</p>
11
easySubjective
<p>Recall the two main products produced during photosynthesis.</p>
12
easySubjective
<p>Define photosynthesis and identify the key ingredients required for this process.</p>
13
easySubjective
<p>Design a simple experiment to demonstrate that plants release carbon dioxide during respiration.</p>
14
easySubjective
<p>Evaluate the statement 'Plants are autotrophs, therefore they do not respire'.</p>
15
easySubjective
<p>Define respiration in plants.</p>
16
mediumSubjective
<p>Critique the statement 'Plants only need sunlight and water to grow' based on your understanding of plant nutrition.</p>
17
mediumSubjective
<p>A plant is kept in complete darkness for an extended period. Formulate a hypothesis about how this will affect the plant's ability to transport food and water.</p>
18
mediumSubjective
<p>Identify the two types of transport tissues found in plants and explain what they transport.</p>
19
mediumSubjective
<p>List three factors that affect the rate of photosynthesis.</p>
20
mediumSubjective
<p>Summarize the function of phloem in plants.</p>
21
mediumSubjective
<p>Analyze the role of stomata in the context of both photosynthesis and respiration in plants. Compare their function during the day and night.</p>
22
mediumSubjective
<p>Examine the effect of blocking stomata on the lower surface of a leaf on the plant's ability to perform photosynthesis. What would happen to the rate of photosynthesis?</p>
23
mediumSubjective
<p>Examine the impact of deforestation on the global carbon cycle. How does the removal of trees affect the balance of carbon dioxide in the atmosphere?</p>
24
mediumSubjective
<p>Contrast the functions of xylem and phloem in the transport of substances within a plant. Provide specific examples of the materials each tissue transports.</p>
25
mediumSubjective
<p>A plant is placed in a closed container with a limited supply of air. Analyze how the concentrations of carbon dioxide and oxygen will change over time, and relate this to the processes of photosynthesis and respiration.</p>
26
mediumSubjective
<p>Analyze the effect of increasing the amount of water available to a plant on its rate of photosynthesis. Explain your reasoning.</p>
27
mediumSubjective
<p>Explain the role of water in plant growth and development.</p>
28
mediumSubjective
<p>Compare the effect of varying light intensity on the rate of photosynthesis in two identical plants. One plant is exposed to full sunlight, and the other is placed under a shade. Analyze the expected differences in starch production after one week.</p>
29
mediumSubjective
<p>Examine how the absence of carbon dioxide would affect the process of photosynthesis in a plant. Explain the immediate and long-term consequences for the plant's survival.</p>
30
mediumSubjective
<p>Analyze how the rate of transpiration might affect the rate of water absorption by the roots of a plant. Describe the relationship and provide a reason.</p>
31
mediumSubjective
<p>Compare the process of respiration in plants and animals. Identify the similarities and differences in terms of gas exchange and energy production.</p>
32
mediumSubjective
<p>Formulate a strategy for a farmer to improve the efficiency of photosynthesis in their crops, considering factors like water availability, nutrient supply, and light exposure.</p>
33
mediumSubjective
<p>Contrast the effect of high temperature versus low temperature on the rate of respiration in plants. Explain your reasoning.</p>
34
mediumSubjective
<p>Evaluate the role of stomata in both photosynthesis and respiration in plants, and explain how their function is essential for the plant's survival.</p>
35
mediumSubjective
<p>Critique the statement 'Plants only absorb water through their roots'.</p>
36
mediumSubjective
<p>Design an experiment to investigate if the rate of transpiration is higher on a windy day compared to a calm day.</p>
37
mediumSubjective
<p>Propose a sustainable method for managing agricultural waste (e.g., crop residues) to benefit plant nutrition and reduce environmental impact.</p>
38
hardSubjective
<p>Calculate the rate of glucose production by a leaf if it absorbs $0.02$ grams of carbon dioxide per second. Assume that all the carbon dioxide absorbed is converted into glucose ($C_6H_{12}O_6$). The molar mass of $CO_2$ is $44 \text{ g/mol}$ and $C_6H_{12}O_6$ is $180 \text{ g/mol}$.</p>
39
hardSubjective
<p>Design an experiment to test the effect of different colors of light on the rate of photosynthesis in a submerged aquatic plant.</p>
40
hardSubjective
<p>Propose a method to determine whether a plant is actively respiring, even in the presence of light when photosynthesis is also occurring.</p>
41
hardSubjective
<p>Propose a method to genetically modify a plant to enhance its photosynthetic efficiency under low light conditions. Justify your approach.</p>
42
hardSubjective
<p>Evaluate the impact of deforestation on the carbon cycle and global climate change, specifically focusing on the role of plants in carbon sequestration.</p>
43
hardSubjective
<p>Design a system to monitor water transport in a plant using non-invasive methods.</p>
44
hardSubjective
<p>Formulate a hypothesis regarding the impact of increased atmospheric carbon dioxide levels on the rate of photosynthesis and plant growth. Justify your hypothesis with scientific reasoning.</p>
45
hardSubjective
<p>A farmer wants to increase the yield of their tomato crop. They decide to add fertilizer containing nitrates to the soil. Analyze how this action affects the plant's life processes, specifically water and food transport.</p>