Please select a subject first
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In some plants anther and stigma mature at the same time this condition is called ______.
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The flower which possesses both androecium and gynoecium is called perfect or ______.
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Which of the following plant contain unisexual flower?
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During Hybridization process anther of the bisexual flower is removed before it dehisces is called ______.
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Insect pollinated flowers are ______.
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Which type of flower has ovary superior?
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The flower which does not open at all are called ______.
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Which one of these statements is incorrect?
The following statements seem to describe the water-pollinated submerged plants.
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In the dioecious aquatic plant shown, identify the characteristics of the male flowers that reach the female flowers for pollination:
| Size of the flower | Colour of flower | The characteristic feature of pollen grain | |
| A | small | brightly coloured | Lightweight and non-sticky |
| B | large | colourless | large and sticky |
| C | small | white | small, covered with mucilage |
| D | large | colourless | non-sticky |
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A botanist studying Viola (common pansy) noticed that one of the two flower types withered and developed no further due to some unfavorable condition, but the other flower type on the same plant survived and it resulted in an assured seed set. Which of the following will be correct?
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Autogamy can occur in a chasmogamous flower if ______.
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Choose the correct statement from the following:
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From among the situations given below, choose the one that prevents both autogamy and geitonogamy.
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What background information did Watson and Crick had available with them for developing a model of DNA? What was their own contribution?
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Viviparity is considered to be more evolved because ______.
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What is the most important pre-condition for adaptive radiation?
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When we talk of functional macromolecules (e.g. proteins as enzymes, hormones, receptors, antibodies etc), towards what are they evolving?
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Two organisms occupying a particular geographical area (say desert) show similar adaptive strategies. Taking examples, describe the phenomenon.
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Name any one green house gas and its possible source of production on a large scale. What are the harmful effects of it?
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What are multipurpose trees? Give the botanical and local names of any two multipurpose trees known to you and list their uses.
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