What is a cell?
Answered Sep 09, 2019
Q4. Give a brief description of the process of synthesis of food in green plants.
Answered May 05, 2019
The leaves have a green pigment called chlorophyll. It helps leaves to capture the energy of the sunlight. This energy is used to synthesize (prepare) food (carbohydrates) from carbon dioxide and water. Since the synthesis of food occurs in the presence of sunlight, it is called photosynthesis.
The process equation as follows:
Q3. How would you test the presence of starch in leaves?
Answered May 05, 2019
To test the presence of starch in leaves: Perform iodine test by adding iodine solution to the leaves, if there is starch present on the leaves then iodine makes a complex of dark blue color with the starch.
Hence we can test the presence of starch in the leaves.
Q2. Distinguish between a parasite and a saprotroph.
Answered May 05, 2019
Difference between Parasites and Saprotrophs:
| Parasites | Saprotrophs |
|
A parasite derives its nutrients from the living organism and it deprives the host of valuable nutrients. For example, Mosquito. |
Saprotroph organisms take in nutrients from dead and decaying matter. For example, Fungi. |
Q1. Why do organisms take food?
Answered May 05, 2019
Organisms take food to:
(i) Get the energy to carry out life processes.
(ii) Build thier bodies.
(iii) To grow.
(iv) Repair damaged parts of their bodies.
Q1 Find the principal and general solutions of the following equations:
Answered Jun 06, 2019
It is given that given
Now, we know that and
Therefore,
the principal solutions of the equation are
Now,
The general solution is
where
and Z denotes sets of integer
Therefore, the general solution of the equation is where
and Z denotes sets of integer
4. 15.8m
Answered Apr 04, 2019
Maximum height will be attained when the final velocity will become zero.
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Structural and functional unit of living being