If you memorize these important biology and Botany questions with answers, you can cover both subjects. Moreover, these Multiple Choice questions will help you to learn them better. The first three parts also cover the important Botany questions with answers and these are also helpful for science students. The links of the first three parts of important botany questions mcq are mentioned below.
This part of important botany questions MCQ also include the Classification and diversity of Plant Kingdom:
1: ATP molecules combine with carrier molecules and flow:
a) Along the concentration gradient
b) Against the concentration gradient
c) Both (a) and (b)
d) None of the above
Answer: Against the concentration gradient
2) Which yields ATP during the contraction of muscles?
a) Myoglobin
b) Creatine phosphate
c) Haemoglobin
d) Myosin
Answer: Creatine Phosphate
3) Energy is transformed by which cell organelles?
a) Chloroplast and leucoplast
b) ER and mitochondria
c) Golgi body and mitochondria
d) Chrloroplast and mitochondria
Answer: Chloroplast and mitochondria
4) Which of the following is a component of the electron transport chain in mitochondria?
a) Phytochrome
b) Cytochrome oxidase
c) Plastocyanin
d) Carotenoids
Answer: Cytochrome oxidase
5) In ATP, the high energy bond is the one which links:
a) Phosphate to phosphate
b) Ribose with phosphate
c) Adenine with ribose
d) Adenine with phosphate
Answer: Phosphate to phosphate
6) Enzymes of the electron transport system are present in:
a) Inner mitochondrial membrane
b) Matrix
c) Intermembranous space
d) Endoplasmic reticulum
Answer: Inner mitochondrial membrane
7: Which of the following accepts terminal electrons?
a) Molecular O2
b) Molecular H2
c) Molecular CO2
d) NADPH2
Answer: Molecular O2
8: When a spontaneous process occurs then free energy of the system:
a) Decreases
b) Increases
c) Remains the same
d) Either can increase or decrease
Answer: Decreases
9: Which of the following acts as a secondary messenger in metabolism?
a) ATP
b) CAMP
c)ADP
d) NAD
Answer: CAMP
10: Each molecule of NADP releases how many ATP molecules?
a) 3
b) 2
c) 4
d) 5
Answer: 3
11: The mechanism of ATP production in aerobic respiration was given by:
a) Krebs
b) Calvin
c) Hatch and Slack
d) Pasteur
Answer: Pasteur
12: Energy flow and energy transformations in living system strictly conform to the:
a) Law of limiting factors
b) Leibig’s law of minimum
c) Laws of thermodynamics
d) Shelford’s law of tolerance
Answer: Laws of thermodynamics
13: Which of the following does not function as an electron carrier?
a) Coenzyme Q
b) Cytochrome-c
c) Cytochrome-a
d) Cytochrome-a3
Answer: Cytochrome-a
14: ATP was discovered by:
a) Blackman
b) Bowman
c) Lipmann
d) Karl Lohmann
Answer: Karl Lohmann
15: In ATP high energy bond is present between:
a) Nucleoside and phosphate group
b) Sugar and phosphate group
c) Base and phosphate group
d) None of the above
Answer: None of the above
16: Richest energy compound is:
a) Creatine phosphate
b) ATP
c) Carbohydrate
d) Fat
Answer: Fat
17: The radiation energy of light is converted to chemical energy and stored as:
a) AMP
b) ADP
c) ATP
d) APP
Answer: ATP
18: Adenosine diphosphate contains:
a) One high energy bond
b) Two high energy bond
c) Three high energy bond
d) Four high energy bond
Answer: One high energy bond
19: The amount of usable energy that is available for doing work when the temperature and pressure are uniform throughout the system is called:
a) Enthalpy
b) Activation energy
c) Spontaneous energy
d) Free energy
Answer: Free energy
20: Which one is always transferred in a redox reaction?
a) Neutron
b) Electron
c) Proton
d) Electron and proton
Answer: Electron
21: When a molecule is reduced it always:
a) Loses electron
b) Loses both protons and electrons
d) Gains electrons
Answer: Gains electrons
22: Basic unit of classification is:
a) Family
b) Genus
c) Species
d) None of these
Answer: Species
23: A plant that produces seeds but lacks flowers, will be placed in the group:
a) Fungi
b) Bryophyta
c) Pteridophyta
d) Gymnosperms
Answer: Gymnosperms
24: The plants which bear flowers and seeds are:
a) Cryptogams
b) Phanerogams
c) Pteridophytes
d) Gymnosperms
Answer: Phanerogams
25: Which plant group is known as vascular cryptogams?
a) Thallophyta
b) Bryophyta
c) Pteridophyta
d) Gymnosperms
Answer: Pteridophyta
26: The term Atracheata is given to:
a) Algae
b) Fungi
c) Bryophyta
d) Pteridophyta
Answer: Bryophyta
27: Phanerogams include:
a) Thallophyta
b) Bryophyta
c) Pteridophyta
d) Gymnosperms and Angiosperms
Answer: Gymnoserpms and Angiosperms
28: Sex organs are multicellular and jacketed in:
a) Algae
b) Fungi
c) Mosses
d) All of these
Answer: Mosses
29: A plant having those plant bodies, developing embryo and reproducing by means of spored will be placed in:
a) Algae
b) Fungi
c) Ferns
d) Liverworts
Answer: Liverworts
30: Phanerogams without ovary are:
a) Dicotyledons
b) Monocotyledons
c) Pteridophytes
d) Gymnosperms
Answer: Gymnosperms
31: The plants having vascular tissue are:
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Both (b) and C0
Answer: Both b and c
32: The main plant body is always gametophytic in:
a) Bryophyta
b) Pteridophyta
c) Gymnosperms
d) Angiosperms
Answer: Bryophyta
33: Which of the following plants is a monocot?
a) Gram
b) Pea
c) Rice
d) Mango
Answer: Rice
34: The classification of Oswald Tippo is not based on:
a) Presence or absence of vascular tissue
b) Embryo presence or absence in the life cycle
c) Cell structure
d) None of the above
Answer: Cell Structure
35: Which plant group is not included in Embryophyta of Oswald Tippo?
a) Thallophyta
b) Bryophyta
c) Pteridophyta
d) Gymnosperms
Answer: Thallophyta
36: Whittaker’s classification is not based on:
a) Complexity of body structure
b) Complexity of cell structure
c) Presence or absence of vascular tissue
d) Trophic structure
Answer: Presence or absence of vascular tissue
37: Monera includes:
a) Prokaryotic organisms
b) Unicellular
c) Multicellular eukaryotes
(d) All of these
Answer: Prokaryotic organisms
38: The ancient form from which archaebacteria and eubacteria arose
(a) Viruses
(b) Cyanobact
c) Progenote
(d) None of these
Answer: Progenote
39: Which of the following are included in the kingdom Protista?
(a) Prokaryotes
(b) Unicellular eukaryotes
(c) Multicellular eukaryotes
(d) None of these
Answer: Unicellular Eukaryotes
40: Mycelium is the plant body of the kingdom:
a) Monera
(b) Protista
c) Fungi
(d) Plantae
Answer: Fungi
41: Reserve food in the form of glycogen and cell wall of chitin are characteristic of the kingdom:
(a) Protista
b) Fungi
(c) Monera
d) All of these
Answer: Fungi
42: A plant flowering and fruiting once in its life is called:
(a) Monoecious
(b) Monocarpic
(c) Annual
(d) Monocot
Answer: Monocarpic
43: A plant with the smallest flower in the plant kingdom is:
a) Lenna
b) Rafflesia
c) Wolffia
d) Zoopsis
Answer: Wolffia
44: The plant with the longest leaves is:
(a) Victoria Regia
(b) Lodoicea
c) Raphia
(d) Orchids
Answer: Raphia
45: Flowering plants are included in:
(a)) Phanerogams
(b) Cryptogams
(c) Bryophytes
(d) Pteridophytes
Answer: Phanerogams
46: Thallophyta includes:
(a) Algae and fungi
(b) Fungi and bacteria
(c) Algae, fungi and lichens
(d) Algae, fungi, bacteria and lichens
Answer: Algae and Fungi
47: Which of the following is having embryo but lacks vascular tissue?
(a) Bryophyta
(b) Pteridophyta
(c) Gymnosperms
(d) Angiosperms
Answer: Bryophyta
48: Most primitive vascular plants are:
(a) Cycads
((b) Ferns
c) Red algae
(d) Brown algae
Answer: Ferns
49: A plant which reproduces by spores, has vascular t but lacks flowers should belong to:
(a) Bryophyta
((b) Pteridophyta
c) Algae
(d) Gymnosperms
Answer: Pteridophyta
50: Which of the following plants show independent alteration of generation?
(a) Angiosperms
b) Gymnosperms
(c) Pteridophytes
(d) Bryophytes
Answer: Pteridophytes
These are some of the important botany questions with answers and in fact, these are important biology questions which will help you to memorize both subjects. Even if you want to cover science subject, this article will help you.