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Name the resistant organic material present in pollen grains

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Questions


Name the organic material exine of the pollen grain is made up of. How is this material advantageous to pollen grain? cbse-Biology-class-12
1 Answer

(a)Can a plant flowering in Mumbai be pollinated by pollen grains of the same species growing in New Delhi? Provide explanations to your answer. cbse-Biology-class-12
1 Answer

Draw is diagram showing process of germination of pollen grains on stigma and label the following parts. -cbse-biology-class10-2012
1 Answer

The study of pollen grains is:
1 Answer

How are ‘pollen banks’ useful? cbse-Biology-class-12
1 Answer

Read the passage given below and answer the questions that follow by choosing the correct option. PASSAGE The government of India has decided to stop all imports of food by 1951 by increasing the internal production and by EQUITABLE distribution of all available internal supplies. Hyderabad State is deficit in food grains, especially in rice and wheat, and has to depend on imports. To achieve self sufficiency, it is imperative that food production must be increased and that all-available internal SURPLUS in the State must be procured for even distribution within the State. This Levy system is designed to PROCURE from the cultivator’s only surplus grain, after making a LIBERAL allowance for their own requirements. This system is called the graded levy system, for the quantity levied is fixed according to the estimated gross production, which is based on the quality of the soil as reflected by average assessment, and is subject to decrease or increase according to the size of the holding. The important features of this new levy system are: government monopoly in major cereal food grains and a ban on the movement of food grains from villages; compulsory levy of grains; guarantee of prices for levy grains; rationing in all areas - statutory in urban areas and non-statutory in rural areas.
1 Answer

With reference to organic farming in India, consider the following statements: Which of the statements given above is/are correct?
0 Answer

Bitumen is a
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How are the cells placed within the pollen grain when shed at a 2-celled stage? cbse-Biology-class-12
1 Answer

Total Kjeldahl Nitrogen (TKN) concentration (mg/L as N) in domestic sewage is the sum of the concentrations of: - gate civil 2017
1 Answer

Still it is observed that it does not form a continuous layer around the pollen grain. Give reason. cbse-Biology-class-12
1 Answer

Bitumen is a
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Suggest four important steps to produce a disease resistant plant through conventional plant breeding technology. cbse-Biology-class-12
1 Answer

A pollen grain in angiosperm at the time of dehiscence from an anther could be 2-celled or 3-celled. Explain. cbse-Biology-class-12
1 Answer

F lexible PVC tubes are used for watering. If some organic solvents are passed through this tube, it becomes stiff. This is due to the fact that the organic solvents
3 Answer

F lexible PVC tubes are used for watering. If some organic solvents are passed through this tube, it becomes stiff. This is due to the fact that the organic solvents
2 Answer

What is Connie’s Christmas present? Why is it “the best Christmas present in the world?English CBSE Class 8 NCERT
1 Answer

What test items should be put under configuration management?
1 Answer

Explain the events upto double fertilisation after the pollen tube enters one of the synergids in an ovule of an angiosperm. -cbse-Biology-class-12
1 Answer

How do organic farmers control pests? Give two examples. cbse-Biology-class-12
1 Answer
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