CBSE Class 11 Biology Plant Kingdom MCQs Set B

Question: When the pollen tube enters the embryo sac, which of the following cell usually gets brust on its entry:
a) Both synergids
b) Central cell
c) Antipodals
d) One of the two synergids
Answer: d

Question: When the pollens of a flower is transferred to the stigma of another flower of a different plant, the pollination is referred to as-
a) Xenogamy
b) Geitonogamy
c) Autogamy
d) Allogamy
Answer: a

Question: Read the following five statements (A-E) and answer the question-
A. Pollination by water is more common amongst abiotic pollinating agent.
B. Pollination by water is quite rare in flowering plants.
C. In water hyacinth and water lily the flowers emerge above the level of water and are pollinated by water.
D. In wind pollinated plants numerous flowers are packed into an inflorescence usually.
E. Self-incompatibility is an outbreeding device which prevents inbreeding.
How many of the above statements are correct?
a) Four
b) One
c) Two
d) Three
Answer: d

Question: In coconut liquid nuclear endosperm is surrounded by white kernel, which is-
a) Integument/seed coat
b) Cellular endosperm
c) Nuclear endosperm
d) Filamentous mesocarp
Answer: b

Question: Development of a gametophyte directly from the sporophyte tissue is called-
a) Apospory
b) Apogamy
c) Adventive embryony
d) Parthenogenesis
Answer: a

Question: Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses?
a) Diplontic life cycle
b) Members of Kingdom Plantae
c) Mode of nutrition
d) Multiplication by fragmentation
Answer: d

Question: In which group of the following would you place the plants having vascular tissue and lacking seeds?
a) Algae
b) Fungi
c) Bryophytes
d) Pteridophytes
Answer: d

Question: In which portion of Cycas diploxylic vascular bundles are found ?
a) Root
b) Stem
c) Leaflet
d) Rachis and leaflet
Answer: d

Question: In a fertilized embryo sac the haploid, diploid and triploid structures are-
a) Antipodal, zygote and primary endosperm nucleus.
b) Synergid, Antipodal and polar nuclei
c) Antipodal, synergid and primary endosperm nucleus
d) Synergid, polar nuclei and zygote.
Answer: a

Question: Endosperm cells of an angiosperm seed are pentaploid, then such a seed may have been formed by which of the following parents?
a) Triploid female and diploid male
b) Tetraploid female and diploid male
c) Both parent are tetraploid.
d) Triploid males and diploid female
Answer: b

Question: Select the incorrect statement about megaspore mother cell.
a) It undergoes mitotic division
b) It undergoes meiotic division
c) It is a large cell containing dense cytoplasm.
d) Generally a single functional megaspore is produced from it.
Answer: a

Question: Male and female flowers are present on same plant in all of these, except:
a) Fig
b) Coconut
c) Maize
d) Date palm
Answer: d

Question: The polar nuclei are present in-
a) The Egg cell
b) The synergid cell
c) The antipodal cell
d) The central cell
Answer: d

Question: Which of the following is correct regarding microsporogenesis in an anther ?
a) Each microsporogenesis involves one meiosis
b) Only one microspore mother cell differentiates in one pollen sac.
c) It consumes tapetum and endothecium both
d) Microspore tetrad is always trihedral.
Answer: a

Question: In angiosperms, the first cell from which the development of male gametophyte takes place is:
a) Central cell
b) Zygote
c) Microspore
d) PEC
Answer: c

Question: Select the incorrect statement:
a) Apomixis is observed in grasses
b) Mango is one seeded fruit
c) Hard seed coat is meant for protection
d) Most of the fruits are parthenocarpic fruits
Answer: d

Question: Phylogenetic system of classification is based on
a) morphological features
b) chemical constituents
c) floral characters
d) evolutionary relationships.
Answer: d

Question: Which of the plant shows clear cut sequence of vegetative, reproductive and senescent phases?
a) Pea
b) Mango
c) Orange
d) Plum
Answer: a

Question: Identify the wrong statement regarding post-fertilization development.
a) The ovary wall develops into pericarp.
b) The outer integument of the ovule develops into tegmen
c) The primary endosperm nucleus develops into endosperm.
d) The ovule develops into seed.
Answer: b

Question: Which one of the following is a correct statement?
a) Pteridophyte gametophyte has a protonemal and leafy stage.
b) In gymnosperms, female gametophyte is freeliving.
c) Antheridiophores and archegoniophores are present in pteridophytes.
d) Origin of seed habit can be traced in pteridophytes.
Answer: d

Question: Phylogenetic classification is one which is based on
a) overall similarities
b) utilitarian system
c) habits of plants
d) common evolutionary descent.
Answer: d

Question: Top-shaped multiciliate male gametes and the mature seed which bears only one embryo with two cotyledons, are characterised features of
a) cycads
b) conifers
c) polypetalous angiosperms
d) gamopetalous angiosperms.
Answer: a

Question: Male gametes are flagellated in
a) Ectocarpus
b) Spirogyra
c) Polysiphonia
d) Anabaena.
Answer: a

Question: Transfusion tissue is present in the leaves of
a) Pinus
b) Dryopteris
c) Cycas
d) both Pinus and Cycas
Answer: d

Question: Which of the following pairs is of unicellular algae?
a) Laminaria and Sargassum
b) Gelidium and Gracilaria
c) Anabaena and Volvox
d) Chlorella and Spirulina
Answer: d

Question: The pyrenoids are made up of
a) proteinaceous centre and starchy sheath
b) core of nucleic acid surrounded by protein sheath
c) core of protein surrounded by fatty sheath
d) core of starch surrounded by sheath of protein.
Answer: a

Question: Mannitol is the stored food in
a) Porphyra
b) Fucus
c) Gracillaria
d) Chara.
Answer: b

Question: Which one of the following is categorised under living fossils ?
a) Pinus
b) Cycas
c) Selaginella
d) Metasequoia
Answer: b

Question: Isogamous condition with non-flagellated gametes is found in
a) Volvox
b) Fucus
c) Chlamydomonas
d) Spirogyra.
Answer: d

Question: Which of the following plants produces seeds but not flowers?
a) Maize
b) Mint
c) Peepal
d) Pinus
Answer: d

Question: In Pinus, the pollen grain has 6 chromosomes then in its endosperm will have
a) 12
b) 18
c) 6
d) 24.
Answer: c

Question: Ulothrix can be described as a
a) filamentous alga lacking flagellated reproductive stages
b) membranous alga producing zoospores
c) filamentous alga with flagellated reproductive stages
d) non-motile colonial alga lacking zoospores.
Answer: c

Question: The product of conjugation in Spirogyra or fertilization of Chlamydomonas is
a) zygospore
b) zoospore
c) oospore
d) carpospore.
Answer: a

Question: Which one of the following is heterosporous?
a) Adiantum
b) Equisetum
c) Dryopteris
d) Salvinia
Answer: d

Question: If the cells of root in wheat plant have 42 chromosomes, then the no. of chromosome in the cell of pollen grain is
a) 14
b) 21
c) 28
d) 42
Answer: b

Question: Turpentine is got from
a) angiospermous wood
b) bryophytes
c) gymnospermous wood
d) ferns.
Answer: c

Question: Which one is a wrong statement?
a) Haploid endosperm is typical feature of Gymnosperms.
b) Brown algae have chlorophyll a and c and fucoxanthin.
c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms.
d) Mucor has biflagellate zoospores.
Answer: d

Question: In the majority of the angiosperms, pollens are discharge at-
a) 2-celled stage
b) 3-celled stage
c) 7-celled stage
d) 8-celled stage
Answer: a

Question: From the statements given below choose the option that is true for a typical female gametophyte of a flowering plant.
i. It is 8-nucleated and 7-celled at maturity.
ii. In majority of the angiosperms, it is monosporic.
iii. It is situated outside the integument but inside the nucellus.
iv. It has an egg apparatus situated at the micropylar end.
v. It generally develops by mitosis of the 4 cells of megaspore tetrad.
a) i, iii, and iv
b) ii, iii and v
c) i, ii and iv
d) ii, iv and v
Answer: c

Question: Statement-1: The innermost layer of microsporangium is tapetum.
Statement-2: The tapetum provides nourishment to developing microspores.
a) Only statement 1 is correct.
b) Only statement 2 is correct.
c) Both statement 1 and 2 are correct.
d) Both statements 1and 2 are incorrect.
Answer: c