Class 7 Exam > Class 7 Notes > Science Class 7 (Old NCERT) > Unit Test: Reproduction in Plants
Unit Test: Reproduction in Plants | Science Class 7 (Old NCERT) PDF Download
Time: 1 hour
Maximum Marks: 30
Attempt all questions.
- Question numbers 1 to 5 carry 1 mark each.
- Question numbers 6 to 8 carry 2 marks each.
- Question numbers 9 to 11 carry 3 marks each.
- Question numbers 12 & 13 carry 5 marks each.
Q1: Which of the following is an example of vegetative reproduction by stems? (1 Mark)
(a) Rose
(b) Mango
(c) Papaya
(d) Coconut
Q2: What is the male reproductive part of a flower? (1 Mark)
Q3: Which type of flower has both male and female reproductive parts? (1 Mark)
(a) Unisexual flower
(b) Bisexual flower
(c) Incomplete flower
(d) None of these
Q4: Name a plant that reproduces asexually through leaves. (1 Mark)
Q5: What is the function of pollen grains in reproduction? (1 Mark)
Q6: Differentiate between self-pollination and cross-pollination. (2 Marks)
Q7: What is the role of spores in reproduction? (2 Marks)
Q8: How does fragmentation help in plant reproduction? Give an example. (2 Marks)
Q9: Explain the process of budding in yeast with a diagram. (3 Marks)
Q10: Describe three different methods of seed dispersal with examples. (3 Marks)
Q11: How does a seed develop into a new plant? (3 Marks)
Q12: Explain the steps of fertilization in flowering plants with a diagram. (5 Marks)
Q13: Describe vegetative reproduction by stem, root, and leaves with examples. (5 Marks)
The document Unit Test: Reproduction in Plants | Science Class 7 (Old NCERT) is a part of the Class 7 Course Science Class 7 (Old NCERT).
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FAQs on Unit Test: Reproduction in Plants - Science Class 7 (Old NCERT)
| 1. What are the different methods of reproduction in plants? |  |
Ans.Plants reproduce through two primary methods: sexual and asexual reproduction. Sexual reproduction involves the fusion of male and female gametes, resulting in seeds. Asexual reproduction occurs without gamete formation and includes methods like budding, fragmentation, and vegetative propagation, where new plants grow from parts of the parent plant.
| 2. What is the role of pollination in plant reproduction? | |
Ans.Pollination is a crucial process in sexual reproduction, where pollen grains from the male anther are transferred to the female stigma of a flower. This process can occur through various agents such as wind, water, insects, and animals. Successful pollination leads to fertilization, resulting in the formation of seeds and fruits.
| 3. How do plants reproduce asexually? | |
Ans.Plants can reproduce asexually through several methods, including vegetative propagation, where new plants grow from parts like stems, roots, or leaves. Other methods include fragmentation, where pieces of the plant break off and develop into new individuals, and apomixis, where seeds form without fertilization.
| 4. What are the advantages of asexual reproduction in plants? | |
Ans.Asexual reproduction offers several advantages, including the ability to produce offspring quickly and in large numbers without the need for pollinators. It allows for the preservation of favorable traits in stable environments, as the offspring are genetically identical to the parent plant, ensuring consistent quality and performance.
| 5. How do environmental factors influence plant reproduction? | |
Ans.Environmental factors such as temperature, light, water availability, and soil conditions significantly impact plant reproduction. For instance, adequate sunlight and water can enhance flowering and fruiting, while extreme temperatures may hinder pollination. Plants have adapted their reproductive strategies to align with these environmental conditions to optimize their reproductive success.
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