Across
- 4. _____ cells helps in the closing and opening of stomata.
- 7. _____ and erect image is formed by convex mirror.
- 9. angle of _____ is equal to the angle of incidence in a glass slab.
- 10. light travels in a ___ line.
- 11. the addition of oxygen to substance is called ___.
- 12. magnesium ____ is produced when magnesium is heated.
- 14. _____is the pigment found in the chloroplast which helps to absorb sunlight.
- 15. the reaction in which heat is evolved with the products is ___ reactions.
Down
- 1. precipitation reaction produces _____ salts.
- 2. leaf has the outermost epidermal layer which are covered with _____.
- 3. ____ is the most important criterion to decide whether the person is living or not.
- 5. green plants are ____in their mode of nutrition.
- 6. _____ of oxygen and gain of hydrogen is reduction.
- 8. a ray travelling towards mirror is called _____ ray.
- 13. ____ mirror is used by dentist.