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Class: Class 10
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Question
One of the environmental problems of Sunderbans is imbalance in prey – predator number — Justify the validity of the statement with three examples. What are the roles of biosphere reserve and sanctuary in the conservation of biodiversity ?
One of the environmental problems of Sunderbans is imbalance in prey – predator number — Justify the validity of the statement with…
Question
Explain the following three problems related to ever-increasing human population
Explain the following three problems related to ever-increasing human population- Over-exploitation and depletion of natural resourcese Changes in atmospheric condition and global…
Question
What information related to evolution can be obtained from the discussion on comparative structure of hearts of different vertebrate groups ? Explain the following two terms in the light of Darwinism – (a) Survival of the fittest (b) Natural selection
What information related to evolution can be obtained from the discussion on comparative structure of hearts of different vertebrate groups ? Explain…
Question
With the help of a checkerboard show the phenotypic ratio of offsprings produced inF2 generation as a result of a cross between a pea plant having pure round yellow coloured seed and another pea plant having wrinkled green coloured seed. Write Mendel’s law of heredity derived from this experiment.
With the help of a checkerboard show the phenotypic ratio of offsprings produced inF2 generation as a result of a cross between…
Question
Write the name of the chemical constituents of eukaryotic chromosome with the help of a table. What happens to a cell when the cell loses control at different points in cell cycle on division ?
Write the name of the chemical constituents of eukaryotic chromosome with the help of a table. What happens to a cell when…
Question
Write one function each of the following five parts of a neuron
Write one function each of the following five parts of a neuron: [1×5=5] (a) Dendron (b) Axon (c) Myelin Sheath (d) Schwann…
Question
Draw a scientific diagram of neuron and label the following parts: [3+2=5]
Draw a scientific diagram of neuron and label the following parts: [3+2=5] (a) Dendron (b) Myelin Sheath (c) Schwann Cell (d) Node…