Students should refer to Worksheets Class 11 Biology Plant Kingdom Chapter 3 provided below with important questions and answers. These important questions with solutions for Chapter 3 Plant Kingdom have been prepared by expert teachers for Class 11 Biology based on the expected pattern of questions in the Class 11 exams. We have provided Worksheets for Class 11 Biology for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Plant Kingdom Class 11 Biology Worksheet
Question. Sporophylls are arranged spirally along an axis, when they aggregate, to form :-
(a) Strobillus
(b) Flowers
(c) Inflorescence
(d) Thalamus
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. The megaspore mother cell in gymnosperms is differentiated from :-
(a) Integument
(b) Embryosac
(c) Nucellus
(d) Endosperm
Answer
C
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. 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. 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. 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. Vascular plants producing integumented megasporangia but not ovary are :-
(a) Pteridophytes
(b) Gymnosperms
(c) Angiosperms
(d) Bryophytes
Answer
B
Question. Pyriform, biflagellate gametes are produced in:-
(a) Ectocarpus, Polysiphonia
(b) Ectocarpus, Laminaria
(c) Ulothrix, Polysiphonia
(d) Fucus, Porphyra
Answer
B
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. 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. 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. Normally in gymnosperms how many archegonia are produced in an ovule ?
(a) One
(b) Two
(c) Two or more
(d) Always one
Answer
C
Question. Which group does not produce embryo ?
(a) Algae
(b) Moss
(c) Liverworts
(d) Club moss
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
