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Published on: 13/05/2022
QB365 provides detailed and simple solution for every Creative Questions in class 11 Biology Subject. It will helps to get more idea about question pattern in every Creative questions with solution.
latest Creative QuestionsDownload Tamil Nadu 11th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Differentiate between chromoplast and leucoplast.
2.
Write a short note on Prokaryotes
3.
Enumerate the functions of cell wall.
4.
How do peroxisomes perform photorespiration?
5.
Differentiate between Chromoplasts and Leucoplasts.
1.
| plastids | |
| Chromoplasts | Leucoplasts |
| (Coloured Plastids) | (Colourless Plastids store food materials) |
| Chloroplast Occurs in green algae and higher plants Pigments chlorophyll a and b |
Amyloplast stores - starch |
| Phaeoplast Brown algae and dinoflagellates Pigment fucoxanthin |
Elaioplast - store - lipids (oils) Seed of monocot and dicots. |
| Rhodoplast Red algae Pigment Phycoerythrin |
Aleuroplast (or) protoplast store - Protein |
2.
Those organisms with primitive nucleus are called as prokaryotes (pro primitive; karyon - nucleus). The DNA lies in the 'nucleoid' which is not bound by the nuclear membrane and therefore it is not a true nucleus and is also a primitive type of nuclear material. The DNA. is without histone proteins. Example: Bacteria, blue green algae, Mycoplasma, Rickettsiae and Spirochaetae.
3.
(i) Offers definite shape and rigidity to the cell.
(ii) Serves as barrier for several molecules to enter the cells.
(iii) Provides protection to the internal protoplasm against mechanical injury.
(iv) Prevents the bursting of cells by maintaining the osmotic pressure.
(v) Plays a major role by acting as a mechanism of defense for the cells.
4.
1. Peroxisomes are small spherical bodies and single membrane bound organelle.
2. It takes part in photorespiration and associated with glycolate metabolism. In plants, leaf cells have many peroxisomes.
5.
| S.No | Chromoplasts | Leucoplasts |
| 1. | Coloured Plastids. | Colourless Plastids store food materials |
| 2. | Eg: Chloroplast Occurs in green algae and higher plants Pigments chlorophyll a and b | Eg: Amyloplast - Stores - Starch. |
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