Questions
Which of the following statements is wrong regarding the Phaeophyceae algae?
- This brown algae is found in marine habitats.
- Dominant pigment found in this is r-phycoerythrin.
- Food is stored as complex carbohydrates; in the form of laminarin or mannitol.
- The plant body has a stalk, stipe and leaf-like fond.
- Asexual reproduction takes place by biflagellate zoospores.
Which of the following statements is false regarding the habits and habitat of algae?
- Algae are simple and thalloid organisms
- They are mainly aquatic organisms and live in freshwater and marine habitats
- They bear chlorophyll
- Some algae occur in association with fungi (as lichen)
- None of these
Hydrocolloids are water holding substances and are used commercially. Which of the following organisms is used to produce these hydrocolloids?
- Bryophytes
- Pteridophytes
- Gymnosperms
- Brown and red algae
- Angiosperms
Which of the following types of reproductions takes place in algae, when the gametes are of same size?
- Sexual reproduction with oogamous fusion
- Asexual reproduction by different kinds of spores
- Sexual reproduction with isogamous fusion
- Sexual reproduction with anisogamous fusion
- Vegetative reproduction by fragmentation
Which of the following bears sporangia that are subtended by leaf-like appendages called sporophylls?
- Sporophyte
- Strobili
- Cones
- Microphylls
- Megaphylls
During practicals, students were asked to identify all the Chlorophycea from the group of algae displayed. Which of the following belonged to this group?
Chlamydomonas, Fucus, Ulothrix, Geledium, Spirogyra and Chara
- Chlamydomonas, Fucus and Ulothrix
- Geledium, Spirogyra and Chara
- Fucus, Ulothrix and Geledium
- Chlamydomonas, Ulothrix, Spirogyra and Chara
- Fucus, Chara, Geledium and Spirogyra
Which of the following is used as packing material for a shipment of living materials?
- Liverworts
- Phaeophyceae
- Chlorophyceae
- Peat
- None of these
Which one of the statements Rita wrote on Gymnosperms was wrong?
- The ovules in gymnosperms are enclosed by an ovary wall.
- Gymnosperms have tap root.
- They are heterosporous.
- Gymnosperms include medium-sized or tall trees and shrubs.
- The stems are unbranched or branched.
Gametophyte is the predominant stage of the life cycle of moss. The gametophyte consists of which of the following two stages?
- Antheridia and archegonia
- Protonema and leafy stage
- Zygote and sporophyte
- Protonema and antheridia
- None of these
Which of the following specialised structures is formed during asexual reproduction in liverworts?
- Gemma
- Spores
- Gametophyte
- Protonema
- Zygote
Which of the following statements is/are false regarding the male sex organ in a Bryophyte?
(a) It is known as antherozoid.
(b) It is multicellular.
(c) It produces biflagellate antheridium.
(d) Antherozoids are released into water for fertilization.
- Only a
- Only c
- Only a and b
- Only b and d
- Only a and c
Which of the following statements is/are false regarding gymnosperms?
(a) Microspores develop into a male gametophytic generation.
(b) The large-sized gametophyte is called pollen grain.
(c) The female strobili are called megasporangiate.
(d) Sporophylls are arranged parallel along an axis.
- Only a
- Only b
- Only a and b
- Only c and d
- Only b and d
Production of spores of two different sizes and sexes by the sporophytes, is shown by Gymnosperms. Which of the following terms is used for such plants?
- Microphyll
- Megaphyll
- Homosporous
- Megaspores
- Heterosporous
Which of the following statements regarding angiosperms is/are false?
(a) Male and female gametes develop in fruits.
(b) They are of classes-dicotyledon and monocotyledon.
(c) Wolfia is the largest angiosperm.
(d) Double fertilisation takes place.
- Only a
- Only c
- Only b and d
- Only a and c
- Only b and d
Match the following:
| 1 | Phylogenetic Classification | a | Based on Chemical contituents |
| 2 | Numerical Taxonomy | b | Based on Evolutionary Relation |
| 3 | Cytotaxonomy | c | Based on all observable characteristics. |
- 1 - a, 2 - c, 3 - b
- 1 - b, 2 - c, 3 - a
- 1 - c, 2 - b, 3 - a
- 1 - b, 2 - a, 3 - c
- 1 - c, 2 - a, 3 - b