Photosynthesis

Total Questions: 37

1 - The process by which plants make their food is ------:

A ) Photosynthesis ✅
B ) Respiration
C ) Digestion
D ) Osmosis

2 - Photosynthesis occurs in------:

A ) Endoplasmic reticulum
B ) Golgi body
C ) Nucleus
D ) Chloroplast ✅

3 - Which gas do plant absorb from the atmosphere during photosynthesis?

A ) Nitrogen
B ) Carbon dioxide ✅
C ) Oxygen
D ) Helium

4 - Photosynthesis in plants take place faster in---:

A ) Red light ✅
B ) Yellow light
C ) Darkness
D ) White light

5 - In the atmosphere carbon dioxide is removed by-----:

A ) Photosynthesis ✅
B ) Deforestation
C ) Afforestation
D ) None of these

6 - A process that is almost reverse of photosynthesis-----:

A ) Respiration ✅
B ) Excretion
C ) Digestion
D ) None of these

7 - Carbohydrates are stored in plants and animals in the following respective form.

A ) Starch and glucose
B ) Starch and glycogen ✅
C ) Cellulose and glucose
D ) None of these

8 - In the plant cells which reactions occur in the stroma of the chloroplasts?

A ) Calvin cycle ✅
B ) Fermentation
C ) Krebs cycle
D ) Decarboxylation

9 - درج ذی میں سے بنیادی فوٹو سنتھٹک پگمنٹ کون سا ہے؟

A ) گلو لکو جن
B ) کلوروفل ✅
C ) زینٹو فل
D ) کاروٹین

10 - A part of plant is not green due to------:

A ) Chloroplast
B ) Leucoplast ✅
C ) Chromoplast
D ) None of these

11 - What is the main purpose of photosynthesis?

A ) Convert light energy into chemical energy ✅
B ) Convert oxygen into energy
C ) Store nitrogen from plant growth
D ) Produce carbon dioxide

12 - Which organisms can perform photosynthesis?

A ) Plants and fungi
B ) 0nly plants
C ) Plants, algae and some bacteria ✅
D ) All living organisms

13 - What are the main raw material required for photosynthesis?

A ) Carbon dioxide and water ✅
B ) Oxygen and glucose
C ) Nitrogen and hydrogen
D ) Light and nitrogen

14 - What is released as a byproduct of photosynthesis?

A ) Oxygen ✅
B ) Nitrogen
C ) Glucose
D ) Carbon dioxide

15 - What is the main pigment involved in absorbing light energy during photosynthesis?

A ) Chlorophyll ✅
B ) Carotenoids
C ) Xanthophyll
D ) Anthocyanin

16 - What is produced during the light reactions of photosynthesis?

A ) Glucose and oxygen
B ) Oxygen ,ATP and NADPH ✅
C ) ATP and glucose
D ) Carbon dioxide and water

17 - The dark reactions( calvin cycle) take place in the -------of the chloroplast.

A ) Stroma ✅
B ) Cytoplasm
C ) Thylakoid membrane
D ) Mitochondria

19 - What is the primary purpose of Calvin cycle?

A ) Convert water into oxygen
B ) Fix Carbon dioxide into glucose ✅
C ) Produce ATP and NADPH
D ) Release carbon dioxide

21 - What does xylem mainly transport in plants?

A ) Sugar and food
B ) Oxygen and Carbon dioxide
C ) Water and minerals ✅
D ) Proteins and enzyme

23 - Which of the following plant groups lack true roots, stems and leaves?

A ) Thallophyta ✅
B ) Pteridophyta
C ) Bryophyta
D ) Gymnosperms

24 - Which plant division is known as the "Amphibians of plant Kingdom" ?

A ) Thallophyta
B ) Pteridophyta
C ) Bryophyta ✅
D ) Angiosperms

25 - The first vascular plants belong to which group?

A ) Thallophyta
B ) Bryophyta
C ) Angiosperm
D ) Pteridophyta ✅

26 - Which of the following is an example of thallophyta?

A ) Fern
B ) Cycas
C ) Moss
D ) Spirogyra ✅

28 - Which of the following plants belongs to gymnosperms?

A ) Pine ✅
B ) Wheat
C ) Mango
D ) Sunflower

29 - In which plant group are seeds not enclosed in a fruit?

A ) Gymnosperms ✅
B ) Bryophyta
C ) Angiosperms
D ) Thallophyta

30 - What is the main characteristic of angiosperms?

A ) They produce spores
B ) They bear flowers and enclosed seeds ✅
C ) They lack seeds
D ) They do not have vascular tissues

31 - Which of the following is a monocot plant?

A ) Wheat ✅
B ) Pea
C ) Rose
D ) Sunflower

32 - Which of the following features is not found in Monocot plants?

A ) Parallel leaf venation
B ) Floral parts in multiples of three
C ) Taproot system ✅
D ) One cotyledon

33 - Which plant group has two cotyledon in their seeds?

A ) Monocots
B ) Dicots ✅
C ) Gymnosperms
D ) Angiosperms

34 - Which of the following plants belongs to dicots?

A ) Apple ✅
B ) Bamboo
C ) Maize
D ) Rice

35 - Lycopodium and Nephrolepis belong to which plant division?

A ) Gymnosperms
B ) Angiosperms
C ) Bryophyta
D ) Pteridophyta ✅

36 - The seeds of which plants are enclosed within fruits?

A ) Angiosperms ✅
B ) Gymnosperms
C ) Pteridophyta
D ) Bryophyta

37 - Which plant group includes Moses , Liverworts and Hornworts?

A ) Bryophyta ✅
B ) Pteridophyta
C ) Gymnosperms
D ) Thallophyta