Plant Kingdom

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

1. Pinus
2. Wolffia
3. Funaria
4. Selaginella

Given below are two statements: In the light of the above statements, choose the most appropriate answer from the options given below:

1. Statement I is incorrect but Statement II is correct
2. Both Statement I and Statement II are correct
3. Both Statement I and Statement II are incorrect
4. Statement I is correct but Statement II is incorrect

Sphenopsida class belongs to .

1. pteridophytes
2. bryophytes
3. angiosperms
4. gymnosperms

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

1. Seeds are absent
2. Gymnosperms have flowers for reproduction
3. Seeds are enclosed in fruits
4. Seeds are naked

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

1. Nutrient absorption
2. Gaseous exchange
3. Sexual reproduction
4. Asexual reproduction

Given below are the stages in the life cycle of pteridophytes. Arrange the following stages in the correct sequence. Choose the correct answer from the options given below:

1. D, E, C, A, B
2. E, D, C, B, A
3. B, A, D, E, C
4. B, A, E, C, D

The correct sequence of events in the life cycle of bryophytes is Choose the correct answer from the options given below :

1. B, E, A, D, C
2. D, E, A, B, C
3. D, E, A, C, B
4. B, E, A, C, D

Read the following statements and choose the set of correct statements: In the members of Phaeophyceae, Choose the correct answer from the options given below:

1. A, B, C and D only
2. B, C, D and E only
3. A, C, D and E only
4. A, B, C and E only

Identify the incorrect pair :

1. Sphenopsida – Adiantum
2. Pteropsida – Dryopteris
3. Psilopsida – Psilotum
4. Lycopsida – Selaginella

Which of the following is the correct match?

1. Gymnosperms : Cedrus, Pinus, Sequoia
2. Angiosperms : Wolffia, Eucalyptus, Sequoia
3. Bryophytes : Polytrichum, Polysiphonia, Sphagnum
4. Pteridophytes : Equisetum, Ginkgo, Adiantum

Identify the pair of heterosporous pteridophytes among the following :

1. Selaginella and Salvinia
2. Psilotum and Salvinia
3. Equisetum and Salvinia
4. Lycopodium and Selaginella

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R: In the light of the above statements, choose the most appropriate answer from options given below:

1. Both A and R are correct but R is NOT the correct explanation of A
2. A is correct but R is not correct
3. A is not correct but R is correct
4. Both A and R are correct and R is the correct explanation of A

Given below are two statements : One labelled as Assertion A and the other labelled as Reason R: In the light of the above statements, choose the correct answer from the options given below :

1. Both A and R are true but R is NOT the correct explanation of A
2. A is true but R is false
3. A is false but R is true
4. Both A and R are true and R is the correct explanation of A

Hydrocolloid carrageen is obtained from :

1. Chlorophyceae and Phaeophyceae
2. Phaeophyceae and Rhodophyceae
3. Rhodophyceae only
4. Phaeophyceae only

Which of the following is incorrectly matched?

1. Ectocarpus - Fucoxanthin
2. Ulothrix - Mannitol
3. Porphyra - Floridian Starch
4. Volvox - Starch

Read the following statements and identify the characters related to the alga shown in the diagram : [Figure] Choose the correct answer from the options given below :

1. C, D and E only
2. A and B only
3. A, B and C only
4. A, C and D only

Gemmae are present in

1. Some Liverworts
2. Mosses
3. Pteridophytes
4. Some Gymnosperms

Which of the following algae produce Carrageen?

1. Blue-green algae
2. Green algae
3. Brown algae
4. Red algae

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

1. Ulothrix
2. Ectocarpus
3. Gracilaria
4. Volvox

Genera like Selaginella and Salvinia produce two kinds of spores. Such plants are known as :

1. Heterosporous
2. Homosorus
3. Heterosorus
4. Homosporous

Which of the following pairs is of unicellular algae?

1. Gelidium and Gracilaria
2. Anabaena and Volvox
3. Chlorella and Spirulina
4. Laminaria and Sargassum

Floridean starch has structure similar to

1. Amylopectin and glycogen
2. Mannitol and algin
3. Laminarin and cellulose
4. Starch and cellulose

Strobili or cones are found in

1. Pteris
2. Marchantia
3. Equisetum
4. Salvinia

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:

1. Pteridophytes
2. Mosses
3. Liverworts
4. Gymnosperms

Pinus seed cannot germinate and establish without fungal association. This is because :

1. it has very hard seed coat
2. its seeds contain inhibitors that prevent germination
3. its embryo is immature
4. it has obligate association with mycorrhizae

Which of the following statements is correct?

1. Selaginella is heterosporous, while Salvinia is homosporous.
2. Stems are usually unbranched in both Cycas and Cedrus
3. Ovules are not enclosed by ovary wall in gymnosperms
4. Horsetails are gymnosperms

Which one is wrongly matched?

1. Biflagellate zoospores – Brown algae
2. Uniflagellate gametes – Polysiphonia
3. Unicellular organism – Chlorella
4. Gemma cups – Marchantia

An example of colonial alga is

1. Volvox
2. Ulothrix
3. Spirogyra
4. Chlorella

Select the mismatch

1. Cycas – Dioecious
2. Salvinia – Heterosporous
3. Equisetum – Homosporous
4. Pinus – Dioecious

Zygotic meiosis is characteristic of

1. Fucus
2. Funaria
3. Chlamydomonas
4. Marchantia