1. What is a tissue?
Ans: A tissue is a group of similar cells that work together to perform a specific function in an organism.
2. What is the utility of tissues in multicellular organisms?
Tissues in multicellular organisms provide structural support, mechanical strength, and enable the division of labor, allowing different parts of the organism to perform specialized tasks.
3. Name the types of simple tissues.
Ans: types of simple tissues are:
Parenchyma
Collenchyma
Sclerenchyma
4. Where is apical meristem found?
Ans: Apical meristem is found at the tips of roots and shoots in plants, where it is responsible for primary growth.
5. Which tissue makes up the husk of a coconut?
Ans: The husk of a coconut is made up of sclerenchyma tissue, which provides rigidity and strength. This tissue is composed of thick-walled, dead cells containing lignin.
6. What are the constituents of phloem?
Ans: Phloem consists of the following elements:
Sieve tubes
Companion cells
Phloem parenchyma
Phloem fibers
7. Name the tissue responsible for movement of our body.
Ans:
Two tissues jointly are responsible for the movement of our body, namely:
Muscular tissue
Nervous tissue
8. What does a neuron look like?
A neuron consists of a cell body containing the nucleus and cytoplasm, from which a long, thin, hair-like structure (axon) emerges. It also has several short, branched structures called dendrites. Neurons can vary in length, with some reaching up to a meter or more.