CBSE Class 11 Biology Plant Kingdom MCQs Set E

Question. Sporophylls are arranged spirally along an axis, when they aggregate, to form :-
(a) Strobillus
(b) Flowers
(c) Inflorescence
(d) Thalamus

Answer: A

Question. Autotrophic aquatic organisms which usually reproduce vegetatively by fragmentation, asexual by non motile spores and perform sexual reproduction also by the non-motile gametes. These organisms are :-
(a) Polysiphonia, Porphyra, Gracilaria
(b) Ectocarpus, Dictyota, Laminaria
(c) Laminaria, Fucus, Sargassum
(d) Volvox, Chara, Spirogyra

Answer: A

Question. Pyriform, biflagellate gametes are produced in:-
(a) Ectocarpus, Polysiphonia
(b) Ectocarpus, Laminaria
(c) Ulothrix, Polysiphonia
(d) Fucus, Porphyra

Answer: B

Question. Which group does not produce embryo ?
(a) Algae
(b) Moss
(c) Liverworts
(d) Club moss

Answer: A

Question. Gemmae are the structures of :-
(a) Asexual reproduction produced in Marchantia
(b) Sexual reproduction produced in most mosses
(c) Asexual reproduction produced in most mosses
(d) Sexual reproduction produced in most liverworts

Answer: A

Question. In which group of plants both male and female gametophytes do not have an independent free living existence ?
(a) Bryophytes
(b) Pteridophytes
(c) Gymnosperms
(d) Both a and b

Answer: C

Question. Floridean starch is characteristic feature of :-
(a) Polysiphonia, Gracilaria, Porphyra
(b) Laminaria, Sargassum, Porphyra
(c) Polysiphonia, Laminaria, Porphyra
(d) Chara, Dictyota, Polysiphonia

Answer: A

Question. Which of the following is odd one from the following about liverworts ?
(a) Foot, Seta, Capsule
(b) Spore, Archegonium, Antheridium
(c) Multicellular rhizoids , Primary protonema & Secondary protonema
(d) Rhizoids, Gemmae, Scales

Answer: C

Question. The habitat where algae can be found in ?
(a) Moist stones
(b) Moist wood
(c) Moist soil
(d) All of the above

Answer: D

Question. The megaspore mother cell in gymnosperms is differentiated from :-
(a) Integument
(b) Embryosac
(c) Nucellus
(d) Endosperm

Answer: C

Question. Consider the following characters :-
1. Formation of only one functional megaspore in a megasporangium
2. Formation of hard covering around megasporangium
3. Development of embryo from zygote within the female gametophyte
4. Retention of megaspore inside the megasporangium
These were very essential events occurred during the course of evolution for the phenomenon of:-
(a) Heterospory
(b) Seed habit
(c) Fruit formation
(d) Covered seed formation

Answer: B

Question. Majority of red algae tend to grow in :-
(a) Marine and warmer areas
(b) Marine and colder areas
(c) Freshwater and warmer areas
(d) Brackish water and colder areas

Answer: A

Question. Which is not true about the uses of algae ?
(a) They increase the level of dissolved oxygen in their immediate environment
(b) They are of paramount importance as primary producer of energy
(c) Porphyra, Laminaria and Sargassum are used as food
(d) Certain marine brown algae produce agar which is used to make ice-creams

Answer: D

Question. Vascular plants producing integumented megasporangia but not ovary are :-
(a) Pteridophytes
(b) Gymnosperms
(c) Angiosperms
(d) Bryophytes

Answer: B

Question. Normally in gymnosperms how many archegonia are produced in an ovule ?
(a) One
(b) Two
(c) Two or more
(d) Always one

Answer: C