the same plant. 3. Answer the following questions in your own words. a. Write the charateristics of subkingdom Phanerogams. b. Distinguish between monocots and dicots. e. Write a paragraph in your own words about the ornamental plants called ferns. d. Sketch, label and describe the Spirogyra.
Answers
Answer:
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Answer:
Explanation:
- A
Phanerogams are plants which have special reproductive structures and produce seeds. Phanerogams are divided into gymnosperms and angiosperms depending on whether the seeds are enclosed in a fruit or not.
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- B
1) Monocots
- The monocot embryos have a single cotyledon.
- They have a fibrous root system.
- Leaves in monocots have parallel venation.
2) dicots
- The dicot embryos have a pair of cotyledons.
- They have a tap root system.
- Leaves in dicots have reticulate or net venation
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- C
Ferns belong to the division Pteridophyta. The plant body of a pteridophyte is differentiated into root, stem, and leaves. They are found in cool, damp, and shady places and have specialized tissues for the conduction of water and food. Ferns are economically important plants as they are used for ornamental purposes.
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- D {diagram in attachment}
Spirogyra is a type of green algae which belongs to the division Thallophyta. It does not have specific parts like leaves, stems etc. It contains chlorophyll and is thus autotrophic in nature. It contains spiral chloroplasts and thin unbranched chains of cylindrical cells.
