CBSE Class 11 Biology Plant Kingdom MCQs Set 05

Question: Life cycle of gymnosperm is
a) Haplontic
b) Diplontic
c) Haplo-diplontic
d) Diplo-haplontic
Answer: b

Question: Diphtheria is caused by
a) Diplococcus
b) Vibrio
c) Bacillus
d) Corynebacterium
Answer: d

Question: Embryo sac represents
a) Female gametophyte
b) Microsporangium
c) Megaspore
d) Megaspore mother cell
Answer: a

Question: A Dutch scientist A.V. Leeuwenhoek discovered bacteria for the first time in
a) Garden soil
b) Rain water
c) Soil
d) Air
Answer: b

Question: In Pinus, the male gametes are
a) Non-ciliate
b) Multiciliate
c) Biciliate
d) Uniciliate
Answer: a

Question: Streptococcus is used in preparation of
a) Idli
b) Bread
c) Wine
d) Cheese
Answer: b

Question: Polar nuclei fuse to produce
a) Zygote
b) Diploid secondary nucleus
c) Antipodal cells
d) Synergids
Answer: b

Question: Currently bacteria are included in
a) Protista
b) Mycota
c) Monera
d) Thallophyta
Answer: c

Question: Branched rhizoids and leafy gametophytes are characteristic of
a) Some bryophytes
b) All bryophytes
c) Some pteridophytes
d) All pteridophytes
Answer: a

Question: Which one is living fossil?
a) Metasequoia
b) Selaginella
c) Cycas
d) Pinus
Answer: c

Question: In which of the following features, Cycas resembles angiosperms?
a) Pollen tube is the carrier of male gametes
b) Dichotomously branched leaves
c) Circinate venation
d) Presence of vessels
Answer: a

Question: Fusion product of polars is referred to as
a) Secondary nucleus
b) Secondary endosperm
c) Zygote
d) Primary endosperms
Answer: a

Question: Like gymnosperms, the angiosperms also exhibit
a) Heterospory
b) Siphonogamy
c) Seed formation
d) All of these
Answer: d

Question: In cyanophyceae, flagella are
a) Absent
b) Present in zoospores only
c) Present in gamete stage only
d) Present
Answer: b

Question: The plant life cycle has both a sporophyte and a gametophyte generation. In the sporophyte stage,
a) Gametes are produced
b) Meiosis occurs
c) Only mitosis takes place
d) Gametophytes form
Answer: c

Question: The life cycle of Ectocarpus and Polysiphonia is
a) Haplo-diplontic
b) Diplontic
c) Haplontic
d) Both haplontic and diplontic
Answer: a

Question: Bacteria lack alternation of generations because there is
a) Neither syngamy nor reduction division
b) No exchange of genetic material
c) Distinct chromosomes are absent
d) No conjugation
Answer: a

Question: The seed coat in both gymnosperms and angiosperms is derived from
a) Microsporangium
b) Microspore
c) Megaspore
d) Integument of megasporangium or ovule
Answer: d

Question: In gymnosperms, megaspore mother cell divides meiotically to form four megaspores. Out of four megaspores, one develops into a multicellular structure termed as
a) Archegonium
b) Strobili
c) Female gametophyte
d) Ovule
Answer: c

Question: Identify the option with correct set of labellings
a) 2 – Microspore, 4 – Ovule, 5 – Microsporangium
b) 2 – Microspore, 3 – Megaspore, 6 – Male gamete
c) 4 – Megasporangium, 5 – Pollen grain, 7 – Egg
d) 1 – Microsporangium, 3 – Ovule, 7 – Embryo
Answer: c

Question: Murein does not occur in the wall of:
(a) Blue green algae
(b) Nostoc
(c) Eubacteria
(d) Diatoms
Answer: a

Question: Infection of Entamoeba histolytica is prevented by:
(a) Uncontaminated food
(b) Avoiding clothes of patient
(c) Avoiding kissing
(d) None of the above
Answer: d

Question: Protonema and leafy stage are the predominant stage of the life cycle of
a) liverwort
b) gymnosperm
c) moss
d) dicots
Answer: c

Question: Cytological information like chromosome number, structure, and behaviour are related with
a) chemotaxonomy
b) numerical taxonomy
c) cytotaxonomy
d) all of these
Answer: c

Question: What is not true of Euglena?
a) Presence of proteinaceous pellicle
b) Presence of cellulose cell wall
c) Presence of chlorophyll
d) Presence of flagellum
Answer: b

Question: Fusion of two gametes which are dissimilar in size is termed as
a) isogamous
b) agamous
c) anisogamous
d) oogamous
Answer: c

Question: Spraying kerosene on stagnant water shall kill Anopheles due to
a) Diffusion into body
b) Entry into and blocking of respiratory tract
c) Prevention of spiracle to come in contact with air
d) Burning of body wall
Answer: c

Question: Which of the following class of algae is rarely found in fresh water?
a) Chlorophyceae
b) Both (a) and (b)
c) Rhodophyceae
d) Phaeophyceae
Answer: d

Question: Passive food ingestion in Amoeba is known as
a) Invagination
b) Circumvallation
c) Circumfluence
d) Import
Answer: c

Question: Euglena stores food as
a) Protein
b) Fat
c) Starch
d) Paramylum
Answer: d

Question: The life cycle of Ectocarpus and Polysiphonia is
a) Diplontic
b) Haplo-diplontic
c) Haplontic
d) Both haplontic and diplontic
Answer: b

Question: What is the number and position of insertions of flagella in Rhodophyceae class of algae?
a) 2–6, equal, lateral
b) Flagella are absent in Rhodophyceae
c) 2–8, equal, apical
d) 2, unequal, lateral
Answer: b

Question: Phylogenetic classification system is based on the
a) physiological characters of organisms
b) anatomical characters of organisms
c) morphological characters of organisms
d) evolutionary relationships between organisms
Answer: d

Question: Red tides are caused by
a) Red algae
b) Fire algae
c) Golden algae
d) Brown algae
Answer: c

Question: Protists obtain food as
a) Holotrophs
b) Chemosynthesisers
c) Photosynthesisers, symbionts and holotrophs
d) Photosynthesisers
Answer: c

Question: In class Phaeophyceae, the plant body is usually attached to the substratum by a A and has a stalk, the B, and leaf-like photosynthetic organ—the C.
a) A – stipe, B – frond, C – holdfast
b) A – holdfast, B – stipe, C – frond
c) A – frond, B – stipe, C – holdfast
d) A – stipe, B – holdfast, C – frond
Answer: b

Question: Entamoeba histolytica excretes through
a) Contractile vacuole
b) General surface
c) Malpighian tubules
d) Food vacuole
Answer: b

Question: Nutrition in Amoeba is
a) Parasitic
b) Saprobic
c) Holophytic
d) Holozoic
Answer: d

Question: Certain stages of Plasmodium vivax may survive for a long time in liver of man in dormant state. On reactivation they enter into cycle; this stage is known as
a) Erythrocytic schizogony
b) Exoerythrocytic schizogony
c) Cycle of Ross
d) Gametogony
Answer: b

Question: Which of the following pteridophytes belong to class Pteropsida?
a) Pteris and Adiantum
b) Selaginella and Pteris
c) Lycopodium and Adiantum
d) Equisetum and Psilotum
Answer: a

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