Q. Ozone hole refers to

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Q. Pine, fir, spruce, cedar, larch and cypress are the famous timber-yielding plants of which several also occur widely in the hilly regions of India. All these belong to

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Q. Pollination is best defined as

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Q. Plants receive their nutrients mainly from

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Q. Movement of cell against concentration gradient is called

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Q. Photosynthesis generally takes place in which parts of the plant?

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Q. Most fish do not sink in water because of the presence of swim bladderair bladderair sacsair in spongy bones

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Q. Plants synthesis protein from

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Q. Plants absorb dissolved nitrates from soil and convert them into

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Q. Out of 900 reported species of living gymnosperms, conifers are represented by about 500 species, About 2,50,000 species of angiosperms (flowering plants) have also been reported in the world. The vast and dominant woodlands in Europe, Asia, North America and mountains such as Himalayas are wooded with

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Q. One of the following is not a function of bones.

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Q. Plants absorb most part of water needed by them through their

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Q. Photo-oxidation is

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Q. Process of cell division can take place by

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Q. Most highly intelligent mammals are

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Q. Plant development is influenced by

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Q. Prokaryotic cells lack

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Q. Photosynthesis takes place faster in

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Q. Nucleus, the genetic material containing rounded body in each cell, was first discovered in 1831 by

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Q. Primary phloem develops from

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