Photosynthesis

Total Questions: 36

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

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

2 - Photosynthesis occurs in-----:

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

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

A ) Carbon dioxide ✅
B ) Nitrogen
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 ) Deforestation
B ) Respiration
C ) Photosynthesis ✅
D ) None of these

6 - A process that is almost reverse of photosynthesis?

A ) Respiration ✅
B ) Digestion
C ) Excretion
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 chloroplasts?

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

9 - ؟درج ذیل میں سے بنیادی فوٹو سنتھیسز پگمنٹ کون سا ہے

A ) گلولکوجن
B ) کلوروفل ✅
C ) کاروٹین
D ) زینٹو فل

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

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

11 - What is the main purpose of photosynthesis?

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

12 - Which organism can perform photosynthesis?

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

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

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

14 - What is released as byproduct of photosynthesis?

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

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 ) ATP and glucose
C ) Carbon dioxide and water
D ) Oxygen ,ATP and NADPH ✅

18 - What is the primary purpose of the Calvin cycle?

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

20 - What does xylem mainly transport in plants?

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

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

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

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

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

24 - The first vascular plants belong to which group?

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

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

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

27 - Which of the following plants belongs to gymnosperms?

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

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

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

29 - What is the name characteristic of angiosperms?

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

30 - Which of the following is a monocot plant?

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

31 - Which of the following feature is not found in monocot plants?

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

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

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

33 - Which of the following plants belongs to dicots?

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

34 - Lycopodium and Nephrolepis belong to which plant division?

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

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

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

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

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