The body of sponges does not possess tissue level of organisation though it is made of thousands of cells. Comment.

……………..is outermost protective layer of plant tissue system made up of compactly arranged cells.

comptete the paragraph by choosing he appropriate words given in the bracket : (degenerated, red bone marrow, adipose connective tissue, blastocyst, umbilical cord, Differentiation) ...... Of stem cells form can form various issues in the body. Stem cells are present in the .......... by which the foetus is joined to the uterus of the mother. Stem cells are also present in the ........ Stage of embryonic development. Stem cells are present in............and............ of adult human beings. It has become possible to produce different types of tissues and the ............ part of any organ with the help of these stem cells.

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. What is the cell body of a nerve cell composed of?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. How are nerves cell bound together to form a tissue?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. Functioning of which two tissues are involved in generating a response to stimuli?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs due to the integrated functioning of the nervous and muscular tissue. What would happen if the nervous tissue is damaged?

Read the paragraph and answer the questions given below it. The cells of the nervous tissue become excited on receiving stimuli and conduct that excitation from one part of the body to another. The cell body containing the cytoplasm and nucleus is the main part of each nerve cell. Numerous, small, branched fibres called dendrites arise from the cell body of the nerve cell. One of the fibres is extremely long, it is called the axon. Numerous nerve cells are bound by connective tissue to form a nerve. Nervous tissue is present in the brain, spinal cord and the network of nerves spread all through the body. In most of the animals, response to stimuli occurs duc to the integrated functioning of the nervous and muscular tissue. How can stimuli at one end of the body generate an impulse in the brain?

Characters of a phylum are given below: Read the characters carefully and answer the question. i. These are aquatic organisms. ii. They have special cells known as collar cells. iii. They reproduce asexually by budding and/ or by sexual method. iv. Their body is supported by spicules made up of calcium carbonate or silica. What are the pores on the body of these animals called ?

Characters of a phylum are given below: Read the characters carefully and answer the question. i. These are aquatic organisms. ii. They have special cells known as collar cells. iii. They reproduce asexually by budding and/ or by sexual method. iv. Their body is supported by spicules made up of calcium carbonate or silica. Animal of which phylum show the given characteristics?

Characters of a phylum are given below: Read the characters carefully and answer the question. i. These are aquatic organisms. ii. They have special cells known as collar cells. iii. They reproduce asexually by budding and/ or by sexual method. iv. Their body is supported by spicules made up of calcium carbonate or silica. Give any two examples of animals belonging to this phylum.