CBSE Class 7 Science -Reproduction in Plants. Students are advised to refer to the attached assignments and practice them regularly. This will help them to identify their weak areas and will help them to score better in examination. Parents should download and give the assignments to their children for practice.
Q. 1 Define the following terms.
a) Rectilinear propagation b) Spectrum c) Fragmentation d) Seed –dispersal.
Q. 2 Choose the correct option:
a) A magnifying glass is a ___________ lens. ( concave/ convex)
b) Concave lens is ____________.( converging/ diverging)
c) Pollen grains are_____________.( male gamete/ female gamete)
d) Budding takes place in ___________. ( ferns/ yeast)
Q. 3 Draw labelled diagram of:-
a) Fertilisation of pollen grain & ovule .
b) Image formed by convex mirror.
Q. 4 Answer the following questions:
a) Mention 2 uses of concave mirror.
b) How is a rainbow formed?
c) What happens when parallel rays of light fall on a curved reflecting surface?
d) What happens to the ovary after fertilisation?
e) Distinguish between self and cross pollination.
f) How do insects help to bring about pollination?
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