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Tracheophytes (Vascular plants)
Tracheophytes include the true land plants or vascular plants. The adult plant body is a sporophyte and shows definite root, stem and leaves. Vascular tissues xylem and phloem are present for the translocation of water and food respectively. Gametophyti..
Tracheophytes (Vascular plants)
Tracheophytes include the true land plants or vascular plants. The adult plant body is a sporophyte and shows definite root, stem and leaves. Vascular tissues xylem and phloem are present for the translocation of water and food respectively. Gametophytic phas..
John has 78 acre of land. He planted roses in 18 of the land. How much..
John has 7 8 acre of land. He planted roses in 1 8 of the land. How much of the land is not planted with roses? => 5 8 acre or 3 8 acre or 3 4 acre or 1 2 acre..
Control of Grazing
Covering the land with small plants and grasses helps the topsoil to remain in place as the roots of these plants bind with the soil particles. Cattle graze on these plants and expose the topsoil Thus, grazing should be allowed only on the land mea..
Bryophytes
Bryophytes are a group of simple and primitive plants. They grow in moist and shady places forming a dense mass or mat on damp soil, rock, logs and other substrata. They are basically terrestrial forms, but require the presence of water for completing the life cycle. Hence..
Summary
The abiotic environment includes the air (atmosphere), water (hydrosphere) and land (lithosphere). The biotic environment includes the plants, animals and the microbe..
Replenishment of Soil by Keeping the Field Fallow
If land is not cultivated for a season or two, the growth of humus in the soil increases, promoting the growth of soil bacteria leading, to rich replenishment of plant nutrients in the soi..
Forests and Wild Life
The biotic component of our environment on land, i.e. plants and animals (leaving aside the oceans and other water bodies) are overwhelmingly found in forest..
Social forestry and environmental forestry
Trees which are useful to the tribal people are planted on community land, individual properties and other public land. The main objectives of social forestry are: Efficient use of public and private land to produce firewood, fodder and timber in a decentr..
Five Kingdom Classification
Five Kingdom Classification - The present trend in biology is to follow the five kingdom classification proposed by R.H.Whittaker in the year 1969. Whittaker classified the living organisms into five kingdoms namely. 1. KINGDOM: MONERA (prokaryotic organisms) 2. KINGDOM: PROTISTA (primitive..
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