Question
What is growth? What are its characteristics ?
✓
Answer
Growth : Growth is a “vital process which brings about an irreversible increase in an organism or its part with respect to its size, weight, form and volume.”
Characteristics of growth:
- Growth is a permanent increase in size, weight, shape, volume and dry weight of a plant.
- The change occurring due to growth is permanent and irreversible.
- Growth is an intrinsic process caused due to internal activities.
- Growth occurs by cell division and cell elongation followed by cell maturation which lead to the formation of different types of tissues.
- Growth in plants is mostly localized, i.e. restricted to some regions of plants possessing meristematic tissues or meris terns.
- Growth has a qualitative aspect where development takes place in an orderly manner and differentiation leads to higher and more complex state.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Name and explain the technique that helps in separation of DNA fragments for recombinant DNA technology experiments. How can these separated DNA fragments be visualised?
OR
OR
- Name the technique used for the separation of DNA fragments.
- Write the type of matrix used in this technique.
- How is the separated DNA visualised and extracted for use in recombinant DNA technology?
- Explain the phenomena of multiple alleles and co-dominance taking ABOblood group as an example.
- What is the phenotype of the following:
- $I^A i$
- $i i$
- Identify the selectable markers in the diagram of E. coli vector shown above.
- How is the coding sequence of a-galactosidase considered a better marker than the ones identified by you in the diagram? Explain.
Write a note on Hering-Breuer reflex.
Describe the process of oogenesis in human female.
| Column A | Column B |
| (1) Neurons | (a) Earthworm |
| (2) Ladder type | (b) Hydra |
| (3) Ganglion | (c) Flatworm |
| (4) Nerve net | (d) Human |
What is ecological succession? Name various seral stages from pioneer species to climax community with
suitable example in hydrarch succession.
What are the possible types of pollinations in chasmogamous flowers. Give reasons.
- Write the two limitations of traditional breeding technique that led to promotion of micro propagation.
- Mention two advantages of micro propagation.
- Give two examples where it is commercially adopted.
A typical mammalian cell has 2.2m long DNA molecule, whereas the nucleus in which it is packed measures about 10m. Explain how such a long DNA molecule is packed within a tiny nucleus in the cell.