Short notes and key points of class 9 biology chapter-Tissues
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Short notes and key points of class 9 biology chapter-Tissues
May 13, 2022, 16:45 IST
Class-9 biology chapter-Tissues
Tissue is a group or collection of similar or dissimilar cells that perform or help to perform a common function and have a common origin.
Difference between the tissues of plants and animals
| S. No. | Plant tissues | Animal tissues |
| 1. |
Most of the plants remain fixed
at one place (sedentary) and need less energy. Therefore the tissues are thick – walled and dead to provide mechanical support. E.g., Sclerenchyma. |
Animals show active locomotion and
hence need more energy. Therefore the tissues are made up of living cells. E.g.-Nervous tissue. |
| 2. |
Growth in plants is indefinite. Certain
tissues (meristematic) in root and shoot apex divide throughout life and add new cells. These cells differentiate and stop dividing to form permanent tissues. |
Growth in animals is definite.
In other words, they do not posses dividing and non-dividing tissues. The animal organs grow more or less uniform. |
| 3. | Plant tissues are not much complicated. | Animal tissues are much more complicated. |
Levels of organization
NCERT text book consist of good quality of numerical for class 9 Academic team of Physics Wallah uploaded NCERT solutions for class 9 Science.
Download Free Pdf sheet of Short notes and key points of Biology for class 9 chapter-Tissues from the link given below.
