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Subject: Biology, asked on 16/2/18

Draw a labelled diagram of the root hair cell as it would appear if some fertilizer is added to the soil close to it.

Subject: Biology, asked on 14/3/19

Please answer question 4

A R
Subject: Biology, asked on 11/5/18

Why and how vegetative characters are more easily affected by environment??But why sexual characters are not so easily affected by environment?

Subject: Biology, asked on 22/5/18

Mention any three adaptations in plants to foster the process of absorbing of water?

Subject: Biology, asked on 7/9/20

Osmosis includes diffusion but not vice versa. State true or false.

Subject: Biology, asked on 16/2/18

Given below is the diagram of an experiment just at the start. Study the diagram carefully and answer the following questions:

(iii) Why have the two kinds of molecules been shown in different sizes?

Subject: Biology, asked on 6/2/18

The diagram given below represents an experimental set-up to demonstrate a certain process. Study the same and answer the questions that follow:



(a) Name the process.
(b) Define the above-named process.
​(c) What would you observe in the experimental set-up after an hour or so?
(d) What control experiment can be set up for comparison?
​(e) Keeping in mind the root-hair, cell and its surroundings, name the parts that correspond to (1) concentrated sugar solution (2) parchment paper and (3) water in the beaker.
​(f) Name any other substance that can be used instead of parchment paper in the above experiment.
​(g) Mention any two advantages of the process to the plants.

Subject: Biology, asked on 25/5/20

Where are the mineral nutrients mostly used in plants?

Subject: Biology, asked on 12/1/18


Q. Name the following:
  1. The category of organisms that prepare their own food from basic raw materials.
  2. The kind of plastids found in the mesophyll cells of the leaf.
  3. The compound which stores energy in the cells.
  4. The first form of food substance produced during photosynthesis.
  5. The organisms  that can be called ''natural purifiers'' of the air.
  6. The source of carbon dioxide for aquatic plants.
  7. The part of chloroplast where the dark reaction of photosynthesis takes place.
  8. The tissue that transports manufactured type of starch from leaves to all parts of the plants.

Subject: Biology, asked on 9/1/18



A . Which leaf dries first?
B. Which leaf dries last?
C. Which leaf does not show any change?
 

Subject: Biology, asked on 7/2/18

Roots of some plant are seen growing through the walls and crevices.why?

Subject: Biology, asked on 20/6/19

loss of cell SAP from the injured part of a plant

Subject: Biology, asked on 15/1/18

3 4 6

Subject: Biology, asked on 14/1/18

Solve this: Identify the false statements and rewrite them correctly by changing the first or the last word only.
(a) Dark reaction of photosynthesis occurs during night time.
(b) Immediate product of photosynthesis is glucose.
(c) Starch produced in a leaf remains stored in it for 2-3 weeks before it is used by other parts of the plant.
(d) Photosynthesis requires enzymes.
(e) Green plants are consumers.
(f) Photosynthesis result in lose of dry weight of the plants.
(g) Photosynthesis stops at a temperature of about 35o C.
(h) Photosynthesis occurs only in cells containing chloroplasts.
(i) Green plants perform photosynthesis.
(j) Algae are autotrophs.
 

Subject: Biology, asked on 5/6/19

Ans this qu
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(a) The diagram given below shows the starting stage of an experiment. Study the same and answer the questions that follow:


(i) Name the phenomenon intended to be shown by this experiment? Define it.

(ii) Which limb of the U-tube, A or B, contains more concentrated solution and why?

(iii) Why are the two kinds of molecules shown in different sizes?

(iv) Mention the function of a semi-permeable membrane.

(v) Which limb of the U-tube, A or B, is functionally comparable to the root hair cell of a plant?

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