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Deep in the tropical rain forest, a botanist discovered an unusual plant with vascular tissues, stomata, a cuticle, flagellated sperm, conelike reproductive structures bearing seeds, and an alternation-of-generations life cycle. He was very excited about this discovery because it would be rather unusual for a plant to have both

A. a cuticle and flagellated sperm.

B. vascular tissues and alternation of generations.

C. seeds and flagellated sperm.

D. alternation of generations and seeds.

Correct Answer :

C. seeds and flagellated sperm.


No known seed plant has flagellated sperms.

Related Questions

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Statement 1: Members of phaeophyceae vary in colour from olive green to various shades of brown.
Statement 2: Phaeophyceae possess chlorophyll a, c, carotenoids and xanthophylls.

A. Both statements -1 and statement - 2 are true and statement - 2 is the correct explanation of statement - 1.

B. Both statements -1 and statement - 2 are true but statement - 2 is not the correct explanation of statement - 1.

C. Statement -1 is true and statement - 2 is false.

D. Statement -1 is false and statement - 2 is true.

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4

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

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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

What is the number and position of insertions of flagella in rhodopyceae class of algae ?

A. 2 - 8, equal, apical

B. 2, unequal, lateral

C. 2 - 6, equal, lateral

D. Absent

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4

A student was given a sample to observe under the microscope. He observed and found that the sample is the most common type of spore involved in asexual reproduction in algae. Identify the spore.

A. Zoospore

B. Endospore

C. Hypnospore

D. None of the above

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Flagellate isogametes and anisogametes are found in

A. Spirogyra

B. Fucus

C. Volvox

D. Chlamydomonas

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4

Which of the following group of plant is being described by given statements ?
(i) The plant body is thalloid.
(ii) Asexual reproduction takes place by fragmentation of thalli, or by the formation of specialized structures called gemmae.
(iii) The sporophyte is differentiated into a foot, seta and capsule.
(iv) They grow usually in moist and shady habitats.

A. Liverworts

B. Moss

C. Fern

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

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

Pyrenoids in green algal cells are related to

A. starch formation

B. protein storage

C. general metabolism

D. enzyme secretion

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4

Which of the following statement(s) is incorrect about mosses ?

A. The predominant stage of its life cycle is the gametophyte which consists of two stages protonema and leafy stages.

B. Leafy stage are attached to the soil through unicellular and branched rhizoids.

C. Sex organs-antheridia and archegonia are produced at the apex of the leafy shoots.

D. All of the above

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4

Which one of the following statement concerning the algae is incorrect ?

A. Most algae are photosynthetic.

B. Algae can be classified according to their pigments.

C. All algae are filamentous.

D. Spirogyra does not produce zoospores.

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4

Place the following groups of plants in order, beginning with those that first appeared on the earth and progressing toward those that appeared most recently in time.

A. Gymnosperms, angiosperms, ferns, moss, algae

B. Algae, moss, ferns, gymnosperms, angiosperms

C. Moss, algae, ferns, angiosperms, gymnosperms

D. Algae, ferns, angiosperms, gymnosperms, moss

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4

Which of the following statement(s) is/are correct about gemmae ?
(i) These are specialised structures by which asexual reproduction take place in liverworts.
(ii) They are green, multicellular and asexual buds.
(iii) They develop in small receptacles called gemma cups.
(iv) They detach from parent body and germinate to form new individuals.

A. (i) and (ii)

B. (ii) and (iii)

C. (i), (ii) and (iii)

D. All of these

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4

Match the column I with column II and choose the option which shows its correct combination.
Column-IColumn-II
(Pattern of life cycle in plant)(Examples)
A. HaplonticI. Bryophytes, Pteridophytes, life cycle Ectocarpus, Polysiphonia, Kelps
B. DiplonticII. Seed bearing plants life cycle (Gymnosperm and Angiosperm), Fucus
C. Haplo-diplonticIII. Many algae (Volvox, life cycle Spirogyra) and some species of Chlamydomonas

A. A III; B II; C I

B. A I; B II; C III

C. A II; B I; C III

D. A III; B I; C II

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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

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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The heterosporous pteridophyte belonging to the class lycopsida is

A. Selaginella

B. Psilotum

C. Equisetum

D. Pteris

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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 pair is incorrectly matched ?

A. Chlorophyceae Major pigments are chl a and b.

B. Phaeophyceae Cell wall is made up of cellulose and algin.

C. Rhodophyceae Stored food is mannitol.

D. Chlorophyceae Cell wall is made up of cellulose.

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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

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

In bryophytes, male and female sex organs are called ______ and ______ respectively.

A. microsporangia; macrosporangia

B. male strobili; female strobili

C. antheridia; archegonia

D. androecium; gynoecium

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4

The unique feature of bryophytes compared to other plant groups is that

A. they produce spores.

B. they lack vascular tissues.

C. they lack roots.

D. their sporophyte is attached to the gametophyte.

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4

Which of the following branch of science is being described by the given statements ?
(i) It can easily done by using computers based on all observable characters.
(ii) Numbers and codes are assigned to all the characters and the data are then processed.
(iii) Each character is given equal weightage and at the same time hundred of characters can be considered.

A. Cytotaxonomy

B. Numerical taxonomy

C. Chemotaxonomy

D. ??-taxonomy

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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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What is common in all the three, Funaria, Dryopteris and Ginkgo?

A. Independent sporophyte

B. Presence of archegonia

C. Well developed vascular tissues

D. Independent gametophyte

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4

Select the correct match of the feature present in column I with its respective terms given in column II.
Column-IColumn-II
A. Presence of tap roots(i) Bryophyte and coralloid roots
B. The synergids and(ii) Pteridophytes antipodal cells degenerates after fertilization
C. The food is stored as(iii) Red algae floridean starch which is very similar to amylopectin and glycogen in structure
D. Presence of sporophyte(iv) Angiosperms which is not free living but attached to the photosynthetic gametophytes and derives nourishment from it
E. Members of this group(v) Gymnosperms are used for medicinal purposes, as soil binders and frequently grown as ornamentals

A. A-i B-ii C-iii D-iv E-v

B. A-iii B-v C-ii D-iv E-i

C. A-iii B-i C-v D-ii E-iv

D. A-v B-iv C-iii D-i E-ii

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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

You are given an unknown plant to study in the laboratory. You find that it has chlorophyll, no xylem. Its multicellullar sex organs are enclosed in a layer of jacket cells. Its gametophyte stage is free living. The plant probabily belongs to

A. chlorophyceae

B. bryophyte

C. pteridophyte

D. gymnosperm