What is a cell?
Structural and functional unit of living being
Q4. Give a brief description of the process of synthesis of food in green plants.
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?
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.
Difference between Parasites and 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?
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:
It is given that given
Now, we know that and
the principal solutions of the equation are
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
Maximum height will be attained when the final velocity will become zero.