Page No 88: - 7) DIVERSITY IN LIVING ORGANISMS
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Question 1:
Which division among plants has the simplest organisms?
Answer:
Thallophyta is the division of plants that has the simplest organisms. This group includes plants, which do not contain a well differentiated plant body. Their body is not differentiated into roots, stems, and leaves. They are commonly known as algae.
Question 2:
How are pteridophytes different from the phanerogams?
Answer:
|
Pteridophyta |
Phanerogams |
|
They have inconspicuous or less differentiated reproductive organs. |
They have well developed reproductive organs. |
|
They produce naked embryos called spores. |
They produce seeds. |
|
Ferns, Marsilea, Equisetum, etc. are examples of pteridophyta. |
Pinus, Cycas, fir, etc. are examples of phanerogams. |
Question 3:
How do gymnosperms and angiosperms differ from each other?
Answer:
|
Gymnosperm |
Angiosperm |
|
They are non-flowering plants. |
They are flowering plants. |
|
Naked seeds not enclosed inside fruits are produced. |
Seeds are enclosed inside fruits. |
|
Pinus, Cedar, fir, Cycas, etc. are some examples of gymnosperms. |
Coconut, palm, mango, etc. are some examples of angiosperms. |
