Q901
Open questionAs land becomes intensively farmed or urbanised, there is tendency for increased variety and density of wildlife population at community ecotones which is known as
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Biology GK · all questionsPlant Anatomy and Physiology
Plant Anatomy and Physiology
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Q902
Open questionMatch List-I (Kinds of aperture) with List-II (Characteristic features) and select the correct answer:
| List-I | List-II |
| a. Sulcus | 1. A round aperture if present in small numbers pori are found in the equatorial region |
| b. Colpa | 2. A longitudinal furrow is found to the distal half of the pollen grain, crossing the pollar axis at right angles |
| c. Ruga | 3. A meridional furrow crossing the equator at right angles and directed at each end to the polls of the pollen grain |
| d. Porus | 4. A furrow is found irregularly on the grain surface |
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Q903
Open questionThe asymmetrical distribution of radiocarbon in glucose formed during photosynthesis is known as
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Q904
Open questionIn which of the following plants, the four microspores formed as a result of microsporogenesis are arranged in '⊥' shaped fashion?
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Q905
Open questionIf a part of flower other than the ovary is also involved in the formation of fruit, it is called a/an
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Q906
Open questionThe number of O2 molecules produced per quantum of light absorbed is known as
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Q907
Open questionDuring embryo development the hypobasal cell and the remaining cells of the embryo (except proembryo) constitute the
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Q908
Open questionIf a dry piece of wood is placed in water, it swells and increases in its volume. This is due to the process of
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Q909
Open questionThe vegetation of megaphytes which is not fixed but either free swimming or free floating like plankton is called
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Q910
Open questionCoorg' and 'Kents' are hybrid varieties of
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Q911
Open questionWhich one of the following is a plant hormone?
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Q912
Open questionThe substrate for photorespiration is
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Q913
Open questionThe elements cycle where the elements do not cycle through the atmosphere in the absence of a gaseous phase rather are stored in the soil and cycle through the soil and organism is known as
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Q914
Open questionThe triploid or the primary endosperm nucleus is formed as a result of the fusion of
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Q915
Open questionIn necrosis, the dead tissue of the leaf spot may fall out leaving circular or irregular perforations called
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Q916
Open questionThe natural germination inhibitors that have been identified include
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Q917
Open questionThe first event in photosynthesis is
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Q918
Open questionThe stamens, concerned with the production of microspores, are
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Q919
Open questionIn the seed of certain species of plants, occurrence of bi-coloured endosperm is quite frequent which is known as
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Q920
Open questionFormation of cup shaped aecidia by Puccinia on the lower side of disease infected leaf is the symptom on
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