1. Exchange of gases occurs through which part of the plant tissue?
2. What is the basic unit of heredity?
3. In plants, water is transported through which of the following medium?
4. Magnesium is a constituent metal of____
5. Name the tissue that transports food to various parts of a plant.
6. Plant cell wall is made up of
7. Which of the following statements about phloem transport is correct?
8. The structure of the cells vary according to their function. Therefore, the tissues are different and are broadly classified into all of the following types, except ______.
9. In a plant cell, ribosome is the site of :
10. Which of the following amino acids cannot be synthesised in the human body?
11. Endoplasmic ______ (ER) is a large network of membrane-bound tubes and sheets:
12. The cell wall of a plant is composed of:
13. Which of the following is not connective tissue?
14. Which of the following is a complex substance that provides structural strength to plants?
15. Non-green plants lack which of the following?
16. Which of the following is a type of Connective tissue?
I. Blood
II. Bone
III. Ligament
17. Carotene in fruits and vegetables gives it which colour?
18. The chemical component that is invariably found in all viruses is:
19. Which of the following is a natural flame retardant?
20. The nucleus of a cell is surrounded by a jelly-like substance called:
21. Bones have a hard non–pliable ground substance rich in calcium salts and .......... fibres which give bone its strength.
22. Which part of a plant cell traps sunlight to make sugar ?
23. _____ are composed of long, fibrous proteins as filaments that slide past each other when a muscle contracts or relaxes.
24. The xylem in plants are responsible for :
25. Which cell organelle has its own DNA and ribosome?
26. In plants, phloem is responsible for the transportation of?
27. Which of the following is a characteristic of permanent tissue?
28. Which of the following is found only in plant cells?
29. Which of the following is NOT present in chlorophyll?
30. What is contained in Chlorophyll?
31. Skin is which of the following types of membrane?
32. Which of the following leucoplasts stores oils and fats?
33. The orange colour of carrot is because of
34. What is the outermost covering of plant cells called?
35. Which of the following is the middle layer in the root apical meristem that gives rise to the cortex?
36. Colour of the plants is green due to the presence of:
37. Which cells give rise to various organs of the plant and keep the plant growing?
38. Match the columns Correctly:
| Column-A (Enzyme/Protein) | Column-B (Role in DNA Replication) |
|---|
| i. Helicase | a. Joins the 3' end of the new DNA segment to the 5' end of the previous one |
| ii. RNA Primase | b. Nucleotide polymerization |
| iii. DNA Polymerase | c. RNA Primer Synthesis |
| iv. DNA Ligase | d. Unwinds the DNA double helix |
39. RNA is a polymeric molecule. What does RNA stand for?
40. Which of the following constitute to form a gene?
41. A group of genes whose activity is coordinated by a DNA site is called:
42. ______ is the water transporting tissue in plants.
44. A ............. is the tissue in most plants containing undifferentiated cells found in zones of the plant where growth can take place.
45. On the basis of structural modification of the cells, simple epithelium is divided into all of the following types, except ____.
46. Which type of epithelium is made of a single thin layer of flattened cells with irregular boundaries?
47. Which tissue has heavily thickened lignified walls?
48. In plants, _____ is present in middle lamella, primary cell and secondary walls and accumulates during the initial stages of growth during cell expansion.
49. Skeletal muscles are attached to the skeleton by tough connective tissues called ................ .
50. Which of the following determines whether a group of organisms that is from the same genus and species arise from a common source or from different sources?
