9th Class Science Tissues Question Bank 9th CBSE Science Tissues

  • question_answer
        Why are plants and animals made of different types of tissue?

    Answer:

                      Plants and animals are two different types of organisms. Plants are autotrophic organisms, so they prepare their own food by photosynthesis Moreover, plants are stationary or fixed organisms. Since they do not consume or need much energy, so most of the tissues of plants a supportive. Most of these tissues such as xylem, phloem, sclerenchyma and cork are dead tissues, i.e., they do not contain living protoplasm.       Animals on the other hand, are heterotrophic organisms. They have to move in search of food, mate and shelter; so they need more energy as compared plants. Most of these tissues contain living protoplasm.               There are some tissues in plants which divide throughout life. They divide for the growth and reproduction of the plants. In contrast to plants, growth in animals is uniform.


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