Below are the Best 30 Botany MCQs with show answer:
30 Botany MCQs With Answer:
1➤ At carbon-3, Chlorophyll a has:
ⓑ -CH3 group
ⓒ -COOH group
ⓓ No functional group
2➤ Photorespiration is favoured by
ⓑ High humidity and temperature
ⓒ High carbon dioxide and low oxygen
ⓓ High oxygen and low carbon dioxide
3➤ C4 plants differ form C3 plants with respect to:
ⓑ First product
ⓒ Substrate which accepts carbon dioxide
ⓓ All the above
4➤ Which one of the following statements about Cytochrome P450 is wrong?
ⓑ It contains iron
ⓒ It is an enzyme involved in oxidation
ⓓ It is coloured cell
5➤ Pigments of PS I occur in:
ⓑ Stromal thylakoids and non-appressed parts of granal thylakoids
ⓒ Both appressed and non- appressed parts of granal thylakoids
ⓓ Stroma
6➤ Enzyme required in early CO₂ fixation in Ca cycle is:
ⓑ RuBP oxygenase
ⓒ PEP carboxylase
ⓓ PGA dehydrogenase
7➤ For fixing one molecule of CO2 in Calvin cycle, are required:
ⓑ 3 ATP + 2 NADPH2
ⓒ 2ATP + 3 NADPH2
ⓓ 3 ATP + NADPH2
8➤ Carbon dioxide is fixed in:
ⓑ Dark reaction
ⓒ Aerobic respiration
ⓓ Anaerobic respiration
9➤ The pigment present universally in all green oxygenic plants is:
ⓑ Chlorophyll b
ⓒ Chlorophyll c
ⓓ Chlorophyll m
10➤ In photosynthesis, photolysis of water is used in:
ⓑ Oxidation of NADP
ⓒ Oxidation of FAD
ⓓ None
11➤ The sporangial stalk in ferns is:
ⓑ Biseriate
ⓒ Triseriate
ⓓ Multiseriate
12➤ The leaves of Pteridium are:
ⓑ Multiseriate
ⓒ Unipinnate
ⓓ Palmate
13➤ The hypobasal quadrant in the fern embryo forms:
ⓑ Leaf and foot
ⓒ Stem and leaf
ⓓ Leaf and root
14➤ The cells of the stomium of fern sporangium are stretched:
ⓑ Radially
ⓒ Longitudinally
ⓓ Antero-posteriorly
15➤ Circinate vernation is present in:
ⓑ Ferns
ⓒ Algae
ⓓ Gymnosperms
16➤ At which stage meiosis takes place in Pteridium ferns?
ⓑ During the spore formation
ⓒ During the gamete formation
ⓓ During the organ formation in prothallus
17➤ In ferns, gametophyte is:
ⓑ Prothallus attached to the sporophyte
ⓒ Prothallus free from sporophyte
ⓓ A structure attached to the rhizome
18➤ Fern prothallus develops from the
ⓑ Zygote
ⓒ Spores
ⓓ Elaters
19➤ Which of the following pair of plants is not seed producer?
ⓑ Funaria and fern
ⓒ Punica and Pinus
ⓓ Ficus and Chlamydomonas
20➤ The edible portion of wood apple comprises:
ⓑ Meso- and epdodarp
ⓒ Inner pericarp and placenta
ⓓ Placenta only
21➤ In ferns, gametophyte is:
ⓑ Prothallus attached to the sporophyte
ⓒ Prothallus free from sporophyte
ⓓ A structure attached to the rhizome
22➤ Fern prothallus develops from the
ⓑ Zygote
ⓒ Spores
ⓓ Elaters
23➤ The edible portion, of jack fruit comprises:
ⓑ Outer axis, bract, perianth, and seed
ⓒ Bract, perianth, pericarp and seed
ⓓ Bract, perianth, placenta and seed
24➤ The edible part in grape is:
ⓑ Pericarp and placenta
ⓒ Endocarp and placenta
ⓓ Mesocarp, endocarp and placenta
25➤ It is useless to produce a seedless:
ⓑ Watermelon
ⓒ Litchi
ⓓ Citrus
26➤ The fruit in Artabotrys is an etaerio of:
ⓑ Achenes
ⓒ Follicles
ⓓ Drupes
27➤ Which of the following plants produces a false fruit?
ⓑ Nelumbo
ⓒ Pineapple
ⓓ Dillenia
28➤ In many schizocarpic remain attached to: fruits the mericarps
ⓑ Androphore
ⓒ Gynophore
ⓓ Carpophore
29➤ The fruit of Mirabilis due to its enclosure in the calyx tube is sometimes described as:
ⓑ Bacca
ⓒ Diplotegia
ⓓ Pseudoutricle
30➤ The dehiscent fruits are sometimes called:
ⓑ Silicose
ⓒ Capsular
ⓓ Leguminous
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