Plant Kingdom

Sphenopsida class belongs to $\_\_\_\_$ .

Given below are two statements:
Statement I: In gymnosperms, the male and female gametophytes remain within the sporangia.
Statement II: In gymnosperms, seeds are not covered.
In the light of the above statements, choose the most appropriat...

In which one of the following, the ovules are not enclosed by an ovary wall and remain exposed?

The correct sequence of events in the life cycle of bryophytes is
A. Fusion of antherozoid with egg.
B. Attachment of gametophyte to substratum.
C. Reduction division to produce haploid spores.
D. Formation of sporophyte.
E. Release of anth...

Match List-I with List-II.

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In bryophytes, the gemmae help in which one of the following?

Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence.
A. Prothallus stage
B. Meiosis in spore mother cells
C. Fertilisation
D. Formation of archegonia and antheridia in gametoph...

Which one of the following is the characteristic feature of gymnosperms?

Which of the following is the correct match?

Which one of the following is not found in Gymnosperms?

Identify the incorrect pair :

Read the following statements and choose the set of correct statements:
In the members of Phaeophyceae,
A. Asexual reproduction occurs usually by biflagellate zoospores.
B. Sexual reproduction is by oogamous method only.
C. Stored food is i...

Which of the following statements is true?

Which classes of algae possess pigment fucoxanthin
and pigment phycoerythrin, respectively ?

Match List - I with List - II.

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Given below are two statements : One labelled as Assertion A and the other labelled as Reason R:
Assertion A : The first stage of gametophyte in the life cycle of moss is protonema stage.
Reason R : Protonema develops directly from spores p...

Identify the pair of heterosporous pteridophytes among the following :

Read the following statements and identify the characters related to the alga shown in the diagram :

(a) It is a member of Chlorophyceae
(b) Food is stored in the form of starch
(c) It is monoecious plant showing oogonium and antheridium
(...

Match List-I with List-II :

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Match the plant with the kind of life cycle it exhibits:

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Which of the following is incorrectly matched?

Hydrocolloid carrageen is obtained form :

Which of the following algae contains mannitol as reverse food material?

Which of the following algae produce Carrageen?

Gemmae are present in

Which of the following pairs is of unicellular algae?

Strobili or cones are found in

Floridean starch has structure similar to

From evolutionary point of view, retention of the female gametophyte with developing young embryo on the
parent sporophyte for some time, is first observed in :

Which of the following statements is correct?

Which one is wrongly matched?

Select the mismatch

An example of colonial alga is

Life cycles of Ectocarpus and Fucus respectively are

Zygotic meiosis is characteristic of

Which one of the following statements is wrong?

Conifers are adapted to tolerate extreme environmental conditions because of

In bryophytes and pteridophytes, transport of male gametes requires

Select the correct statement

Which one of the following statements is wrong?

In which of the following, gametophyte is not independent free living?

Male gametes are flagellated in

Read the following five statements (A to E) and select the option with all correct statements.
A.   Mosses and lichens are the first organisms to colonise a bare rock.
B.   Selaginella is a homosporous pteridophyte
C.   Coralloid roots in ...

Which one is a wrong statement?

Which of the following is responsible for peat formation?

Which one of the following is wrong about Chara?

Male gametophyte with least number of cells is present in

Which one of the following is wrongly matched?

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

The plant body is thalloid in