Question

Ans.
Tick mark the correct alternative in the box with pen :
11. In the experiment on photosynthesis, the leaf is boiled in
alcohol kept in a water bath because ......
(A) alcohol is bad for leaf
(B) alcohol is volatile
70) alcohol catches fire on heating directly
(D) alcohol leaves ſumes
(A)
(B)
(0)
()
12. Which of the following is not essential for photosyn-
thesis? OR
........ is not essential for photosynthesis,
(March '14; Oct. '14) (A)
(A) Oxygen (B) Carbon dioxide (C) Light (D) Chlorophyll
(B)
(c)
DO
(A)
(B)
(C)
(D)
13. In the experiment, to test the presence of starch, the leaf is
boiled in alcohol using a water bath because
(A) alcohol softens the leaf
(B) alcohol disallows iodine to enter the leaf
(C) alcohol allows iodine to enter the leaf
(D) alcohol dissolves the chlorophyll
14. Ankita bought some glucose powder. She felt it was adulter-
ated with starch powder. How would she test it? (Oct. '14)
(A) sieving (B) dissolving it in water
(C) iodine (D) all of these
15. De-starching of the plant is done for the experiment on
(A) (B) (COD)
(A) transpiration
(C) respiration
(B) photosynthesis
(D) diffusion
(A)
(B) (COD)
16. Excess of carbohydrates stored in the plant body is in the
form of ......
(A) salt (B) nitrogenous substances
(C) starch (D) lipid
17. Carbon dioxide from the atmosphere enters the leaf through
the ......... present on the upper layer.
(A) stomata (B) veins (C) waxy cuticle (D) epidermis
"W (1) 00 00
(A) (B) (C) (DO
(B)
(0)
8. Light energy splits the water molecule into hydrogen and
oxygen, releasing energy in the form of ..........
(A) carbohydrates (B) ATP (C) ADP (D) starch
19. The cell organelle, ......... is concerned with photosynthesis. (A)
(A) ribosome (B) endoplasmic reticulum
(C) Golgi apparatus (D) chloroplast
de complete the following reaction for the photosynthesis :
Chlorophytt
...... .. . -
LV
21. Arrange the steps in correct order to demonstrate that carbon
(A)
dioxide is produced during respiration.
(i) Soak gram seeds overnight and place them in a conical
flask.
(ii) Fit a cork and U tube into the conical flask.
(iii) Suspend a test tube containing KOH pellets in the conical
flask.
(iv) Keep the set up undisturbed for some time.
(B))
DO
(C)-iii-ii-iv
(D) 1-il-iv-ii
Vi-ii-iil - iv
(B) i-ii-iv-ilt​

Answer 1

Answer:

16. Starch

Sorry but your other questions are out of my mind

Answer 2

Answer:

11.(B) is my answer for the question