Which of the following Greek root word means "naked" and hence gives name to plants like cycas and pines?
1. | angeion | 2. | sperm |
3. | gymnos | 4. | gynos |
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The term ‘strobilus’ in a gymnosperm defines a:
1. collection of megasporophylls
2. collection of microsporophylls
3. site of sporangial development
4. collection of megasporophylls, microsporophylls and/or a site of sporangial development
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Female sex organs of gymnosperms are called:
1. | Archegonia | 2. | Female strobili |
3. | Megasporangium | 4. | Megasporophyll |
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Identify the incorrect statement regarding algae:
1. | Algae contain chlorophyll |
2. | Algae are autotrophic |
3. | Body of an alga is composed of pseudoparenchyma and hyphae |
4. | Cell wall of an alga is composed of true cellulose. |
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The bryophytes are also called as the amphibians of plants kingdom mainly because:
1. they respire through the moist epidermis
2. they depend on water for sexual reproduction
3. they require more water than most plants
4. they lack true roots
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Red algae photosynthesize at ocean depths greater than any other group of algae and hence can be found in deepest waters because they
1. | contain a higher concentration of chlorophyll |
2. | have an extremely large surface area to capture the little amount of light that reaches them |
3. | contain the pigment phycoerythrin |
4. | periodically float to the surface and intercept light, then move back to the ocean floor |
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The given diagram shows:
1. Female thallus of Marchantia
2. Male thallus of Marchantia
3. Female thallus of Funaria
4. Male thallus of Funaria
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Vegetative reproduction in mosses is by:
1. Fragmentation and budding in secondary protonema
2. Only budding in secondary protonema
3. Adventitious roots and budding in secondary protonema
4. Fragmentation and budding in sporophyte
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The structure marked as “b” can be used for:
1. Photosynthesis 2. Attachment 3. Buoyancy 4. Reproduction |
The economic importance of bryophytes include:
I. A moss provides peat used as a packing material
II. They are early colonizers of land in ecological succession
III. They can decompose rocks
IV. They can prevent soil erosion
1. | Only I, II and III | 2. | Only I, III and IV |
3. | Only II, III and IV | 4. | I, II, III and IV |
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