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4

Classification of plants proposed by Carolus Linnaeus was artificial because it was based on

A. only a few morphological characters.

B. evolutionary tendencies which are diverse.

C. anatomical characters which are adaptive in nature.

D. physiological traits alongwith morphological characters.

Correct Answer :

A. only a few morphological characters.


Plant classification proposed by Carolus Linneaus was artificial because it was based on a few morphological characters such as habit, colour, number and shape of leaves, etc.

Related Questions

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4

Which of the following class of algae is rarely found in fresh water ?

A. Chlorophyceae

B. Phaeophyceae

C. Rhodophyceae

D. Both (a) and (b)

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4

The spreading of living pteridophytes is limited and restricted to narrow geographical region because

A. gametophytic growth needs cool, damp and shady places.

B. it requires water for fertilization.

C. due to absence of stomata in leaf and absence of vascular tissue.

D. both (a) and (b)

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4

Cycas and Adiantum resemble each other in having

A. seeds

B. motile sperms

C. cambium

D. vessels

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4

Fern plant is a

A. haploid gametophyte

B. diploid gametophyte

C. diploid sporophyte

D. haploid sporophyte

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4

Consider the following statements regarding gymnosperms and choose the correct option.
(i) In gymnosperms, the male and female gametophytes have an independent existence.
(ii) The multicellular female gametophyte is retained within the megasporangium.
(iii) The gymnosperms are heterosporous. Of these statements

A. (i) and (ii) are correct but (iii) is incorrect

B. (i) and (iii) are correct but (ii) is incorrect

C. (ii) and (iii) are incorrect but (i) is correct

D. (ii) and (iii) are correct but (i) is incorrect

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4

What is the similarity between gymnosperms and angiosperms?

A. Phloem of both have companian cells.

B. Endosperm is formed before fertilization in both.

C. Origin of ovule and seed is similar in both.

D. Both have leaves, stem and roots.

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4

Algin, carrageen and proteins are obtained from

A. red algae, brown algae, green algae respectively.

B. brown algae, red algae, green algae respectively.

C. red algae, green algae, brown algae respectively.

D. green algae, brown algae, red algae respectively.

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4

Which of the following statements about algae is/are correct?
(i) Algae are chlorophyll bearing simple, thalloid, heterotrophic and aquatic (both fresh water and marine) organisms.
(ii) Algae reproduce by vegetative means only.
(iii) Fusion of two gametes dissimilar in size is termed as oogamous.
(iv) A few of the massive forms of algae such as kelps, form massive plant bodies.

A. Only (i)

B. Both (i) and (iii)

C. Only (iv)

D. All of these

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4

Cytological information like chromosome number, structure, behaviour are related with

A. numerical taxonomy

B. cytotaxonomy

C. chemotaxonomy

D. all of the above

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4

_______ represent the reproductive organs amongst gymnosperms.

A. Prothallus

B. Capsules

C. Setae

D. Cones

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4

Which one of the following is the major difference between mosses and ferns ?

A. Ferns lack alternation of generation while mosses show the same.

B. Mosses are facultative aerobes while ferns are obligate aerobes.

C. Vascular bundles of ferns show xylem vessels while those of mosses lack it.

D. Sporophytes of ferns live much longer as compared to the sporophytes of mosses.

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4

Which of the following statements (i) - (v) are correct ?
(i) In Equisetum, the female gametophyte is retained on the parent sporophyte.
(ii) In Ginkgo, male gametophyte is not independent.
(iii) The sporophyte in Riccia is more developed than that in Polytrichum.
(iv) Sexual reproduction in Volvox is isogamous.

A. Two

B. Three

C. Four

D. One

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4

Which of the following statement(s) is/are correct ?

A. In angiosperms, each embryo sac has a three-celled egg apparatus one egg cell and two synergids, three antipodal cells and two polar nuclei.

B. All seed bearing plants i.e., gymnosperms and angiosperms follow dipontic life patterns of plants.

C. In gymosperms, roots in some genera have fungal association in the form of mycorrhiza (Pinus) while in some others (Cycas) small specialized roots called coralloid are associated with N2 fixing cyanobacteria.

D. All of the above

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4

Which of the following, examples belongs to the same class of algae?

A. Chara, Fucus, Polysiphonia

B. Volvox, Spirogyra, Chlamydomonas

C. Porphyra, Ectocarpus, Ulothrix

D. Sargassum, Laminaria, Gracilaria

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4

Which of the following statement is incorrect ?

A. Double fertilization is unique to gymnosperms and monocotyledons.

B. Sequoia, a gymnosperm, is one of the tallest tree species.

C. Phaeophyceae members possess chlorophyll a, c, carotenoids and xanthophylls.

D. Moss is a gametophyte which consists of two stages namely, protonemal stage and leafy stage.

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4

Which of the following statement(s) is/are correct about pteridophytes ?
(i) The main plant body is a sporophyte which is differentiated into true roots and leaves.
(ii) The leaves are small (microphylls) as in ferns or large (macrophylls) as in Selaginella.
(iii) Genera like Selaginella and Salvinia which produce two kinds of sporesmacro (large) and micro (small) spores, are known as heterospores.
(iv) Common examples are Funaria, Polytrichum and Sphagnum.

A. Both (i) and (ii)

B. Both (ii) and (iii)

C. Both (i) and (iii)

D. All of these

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4

Bryophytes are different from fungi in having

A. land habit.

B. sterile jacket layers.

C. multiflagellate gametes.

D. gametophytic plant body.

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4

A universal feature of the life cycle of plants is

A. morphologically identical haploid and diploid stages.

B. genetically identical haploid and diploid stages.

C. alteration of generations between heteromorphic haploid gametophytes and diploid sporophytes.

D. none of the above

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4

Which of the following statements with respect to gymnosperms and angiosperms is/are correct?
(i) The process of double fertilization is present in gymnosperms.
(ii) Angiosperms range in size from microscopic Wolffia to tall trees of Sequoia.
(iii) In gymnosperms, the seeds are not covered.
(iv) In gymnosperms, the male and female gametophytes have an independent free living existence. Of the above statements

A. (i) and (ii)

B. (iii) only

C. (ii) and (iii)

D. (iii) and (iv)

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4

Consider the following statements regarding the major pigments and stored food in the different groups of algae and choose the correct option
(i) In chlorophyceae, the stored food material is starch and the major pigments are chlorophyll-a and d.
(ii) In phaeophyceae, laminarian is the stored food and major pigments are chlorophyll-a and b.
(iii) In rhodophyceae, floridean starch is the stored food and the major pigments are chlorophyll-a, d and phycoerythrin.

A. (i) is correct, but (ii) and (iii) are incorrect

B. (i) and (ii) are correct, but (iii) is incorrect

C. (i) and (iii) are correct, but (ii) is incorrect

D. (iii) is correct, but (i) and (ii) are incorrect

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4

Match column-I with column-II and choose the correct option.
Column-IColumn-II
A. PhaeophyceaeI. Have an elaborate mechanism of spore dispersal
B. RhodophyceaeII. first terrestrial plant with vascular tissue-phloem and xylem
C. MossesIII. Asexual reproduction by biflagellate zoosposes
D. PteridophytesIV. Polysiphonia, Porphyra, Gracilaria

A. A III; B IV; C I; D II

B. A IV; B III; C I; D II

C. A IV; B III; C II; D I

D. A IV; B I; C III; D II

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4

Which of the following group of plant is being described by the given statements ?
(i) They are plants in which the ovules are not enclosed by any ovary wall and remain exposed before and after fertilization.
(ii) The giant red wood tree Sequoia is one of the tallest tree species of the group.
(iii) The roots are generally tap roots.
(iv) They are heterosporous and they produce haploid microspores and megaspores.

A. Algae

B. Bryophytes

C. Gymnosperms

D. Pteridophytes

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4

Match column-I with column-II and select the correct answer using the codes given below.
Column-IColumn-II
(Group of Planet Kingdom)(Examples)
A. AlgaeI. Solanum tuberosum
B. FungiII. Equisetum
C. AngiospermIII. Cycas
D. PteridophyteIV. Chlamydomonas
E. GymnospermV. Rhizopus

A. A V; B IV; C I; D II; E III

B. A IV; B V; C I; D II; E III

C. A IV; B I; C V; D II; E III

D. A IV; B I; C V; D III; E II

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4

A research student collected certain alga and found that its cells contained both chlorophyll a and chlorophyll d as well as phycoerythrin on the basis of his observation the students conclude that the alga belongs to

A. rhodophyceae

B. bacillariophyceae

C. chlorophyceae

D. phaeophyceae

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4

Mosses are of great ecological importance because of

A. its contribution to prevent soil erosion.

B. its contribution in ecological succession.

C. its capability to remove CO from the atmosphere.

D. both (a) and (b)

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4

Why rhodophyta exhibit a red colour ?

A. Since most rhodophyta grow at great depths, the chlorophyll can only absorb light in the red area of the spectrum.

B. The wavelengths of light that are absorbed by chlorophyll are passed to phycoerythrin (a red pigment).

C. Red pigment of rhodophyta absorbs all the light waves.

D. The light reaching the greatest depth in water is in the blue-green region of the spectrum, is absorbed by phycoerythrin.

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4

Protonema and leafy stage are the predominant stage of the life cycle of

A. moss

B. dicots

C. liverwort

D. gymnosperm

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4

Refer the statement and answer the question. They usually reproduce vegetatively by fragmentation and asexually by non - motile spores and sexually by non - motile gametes.
Identify the group of plants and its example.

A. Mosses, Funaria

B. Red algae, Polysiphonia

C. Brown algae, Laminaria

D. Pteridophytes, Selaginella

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4

In order to colonize land, plants needed to acquire which of the following characteristics?

A. A mechanism for moving water throughout the plant.

B. A mechanism to prevent desiccation of tissues.

C. An ability to screen ultraviolet radiation.

D. Both (b) and (c)

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4

Classification of plants proposed by Carolus Linnaeus was artificial because it was based on

A. only a few morphological characters.

B. evolutionary tendencies which are diverse.

C. anatomical characters which are adaptive in nature.

D. physiological traits alongwith morphological characters.