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प्रश्न
Give biological explanations for All the food chains begin with green plants.
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उत्तर
Green plants are the only organisms that are able to synthesize food from CO2 and H2O in presence of chlorophyll and sunlight. However, animals depend upon plants for food. Therefore, all food chains begin with green plants
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संबंधित प्रश्न
Describe the function of placenta.
The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:

(i) Label the parts numbered 1 to 3 in the diagram.
(ii) Mention any two functions of the part labelled 2 in the diagram.
(iii) Explain the significance of the part numbered 3 in the diagram.
(iv) Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?
(v) Mention the sex chromosomes in a male and female embryo.
The ratio of the number of chromosomes in a human zygote and a human sperm is ______
List two changes observed in girls at the time of puberty.
Name the following:
Organ where implantation takes place.
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The prostate gland and Cowper’s gland (the nature of secretion)
Give Technical Term:
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Choose the Odd One Out:
Multiple Choice Question:
What will happen if the temperature of the scrotal sacs temporarily goes to about 2°C lower than body temperature?
The male homologue of the female clitoris is ____________.
