Read the following statement carefully:

"Further development of zygote depends on the type of life cycle the organism has and the environment it is exposed to."

Identify the correctly matched pair w.r.t the above statement

Haplontic life cycle

Haplodiplontic life cycle

Diplontic life cycle

Haplontic life cycle

  • Thick walled zygote

  • Zygote forms new generation, by mitosis, represented by one cell

  • Zygote undergoes meiosis to form haploid generation

  • Zygote forms multicellular diploid generation

What is a, b, c, and d in the given table for algae?

Class

Pigment

Stored food

Flagella

Chlorophyceae 

Chl. a, b

__a__

2-8 equal

__b__

Chl. a, c, Fucoxanthin

Laminarin

__c__

Rhodophyceae

Chl. a, d, Phycoerythrin

 __d__

Absent

2. a : Glycogen; b : Pheophyceae; c : 2 Lateral unequal; d : Floriden starch

  • a : Starch; b : Pheophyceae; c : 2, Lateral equal; d : Floriden starch

  • 4. a : Starch; b : Pheophyceae; c : 2 Lateral unequal; d : Floriden starch

  • a : Starch; b : Pheophyceae; c : 2 apical unequal; d : Floriden starch

  • 4

Read the following statements :

(a) More than one Archegonia
(b) Show symbiotic associated with Nitrogen fixing Cyanobacteria and fungus
(c) Show heterosporous nature
(d) Reduced male gametophyte is called a pollen grain

The above statement is related to which option?

  • Bryophytes

  • Gymnosperms

  • Pteridophytes and Gymnosperm

  • Gymnosperm and Angiosperm

In pteridophytes, antheridium are present in :- 

  • Leafy gametophyte

  • Prothallus

  • Sporophyll

  • Protonema

Which of the following feature(s) is/are exclusive in angiosperms :-

a. Presence of fruit

b. Double fertilization

c. Female gametophyte

d. Presence of flowers

e. Formation of endosperm

f. Presence of vessels and companion cells

Tick the right one :-

  • a, b, c, e

  • b, c, d, e

  • b, d, e, f

  • a, b, d, f

 Motile flagellated cells are never produced by the members of

  • Chlorophyta

  • Chrysophyta

  • Phaeophyta

  • Rhodophyta

Identify the incorrect statement regarding Chlorophyceae.

  • The major photosynthetic pigments are Chlorophyll a and Chlorophyll b

  • The stored food is in the form of starch

  • The cell wall is made of cellulose

  • Flagella are 2–8 in number, unequal, and always apical.

Which of the following pairs is of unicellular algae?

  •   Gelidium and Gracilaria

  • Anabaena and Volvox

  • Chlorella and Spirulina

  • Laminaria and Sargassum

Strobili or cones are found in:

  •   Pteris

  •   Marchantia

  •   Equisetum

  •   Salvinia 

Which of the following is not true about red algae?

multicellular

  • Predominance of r-phycoerythrin in their body

  • Majority of them are found in colder areas

  • The red thalli of most of the red algae are

  • The food is stored as floridean starch

Find the incorrect match

  • Isogametes – Cladophora

  • Isogametes – Rhizopus

  • Heterogametes – Ulothrix

  • Heterogametes – Volvox

Phycoerythrin is the major pigment in :

  • Red algae

  • Blue-green algae

  • Green algae

  • Brown algae

Red algae are mostly found in    A    with abundance in the    B   .

                   A                                                B

  • Freshwater habitats                            Warmer areas

  • Marine habitats                                    Colder areas

  • Freshwater habitats                              Colder areas

  • Marine habitats                                    Warmer areas

In angiosperms, zygote undergoes

  • Meiosis

  • Mitosis

  • Differentiation

  • Both (2) and (3)

Green algae do not store food in the form of

  • Protein

  • Starch

  • Oil droplets

  • Glucose

Which of the following statements is incorrect about gymnosperms?

  • They are heterosporous

  • Male and female gametophytes are free-living

  • Most of them have narrow leaves with thick cuticle

  • Their seeds are not covered

Male and female gametophytes do not have an independent free-living existence in:-

  • Pteridophytes

  • Algae

  • Angiosperms

  • Bryophytes

Examine the figures A, B, C and D. In which one of the four options all the items, A, B, C and D are correct ?

Options :
        A                     B               C                  D

  • Equisetum         Ginkgo      Selaginella      Lycopodium
  • Selaginella       Equisetum     Salvinia        Ginkgo
  • Funaria             Adiantum     Salvinia          Riccia
  • Chara              Marchantia      Fucus           Pinus

Examine the figure given below and select the
right option giving all the four parts (a, b, c and d)
correctly identified :

 

(a)

(b)

(c)

(d)

1.

Antheri-

diophore

Male thallus

Globule

Roots

2.

Archego-

niophore

Female thallus

Gemmacup

Rhizoids

3.

Archego-

niophore

Female thallus

Bud

Foot

4.

Seta

Sporophyte

Protonema

Rhizoids
  • 1
  • 2
  • 3
  • 4

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

  • Volvox

  • Ulothrix

  • Ectocarpus

  • Gracilaria

Which of the following algae produce Carrageen?

  • Red algae

  • Blue-green algae

  • Green algae

  • Brown algae

Gemmae are present in:

  • Some Gymnosperms

  • Some Liverworts

  • Mosses

  • Pteridophytes

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

  • Homosporous

  • Heterosporous 

  • Homosorus

  • Heterosorus

The main photosynthetic pigments of green algae are

  • Chl a & b

  • Chl a & c

  • Chl a & d

  • Chl c only

Green algae can store food in all of the following forms, except

  • Protein

  • Starch

  • Oil droplets

  • Mannitol

In all members of algae inner cell wall is cellulosic however outer cell wall can be of different types. In green algae outer cell wall is made up of

  • Pectin

  • Algin

  • Agar

  • Funor

 Match the alga with the type of life cycle and select the correct match from the codes given:
Alga Type of life cycle
A Spirogyra P Haplontic
B Fucus Q Diplontic
C Polysiphonia R Haplo-diplontic

Codes:
A B C
1. P Q R
2. P R Q
3. Q P R
4. R Q P

 
  • 1
  • 2
  • 3
  • 4
What would be true for both Cycas and Pinus?
 
  • Cycas is a gymnosperm and Pinus is a pteridophyte
  • The gametophyte is dominant in the life cycle of Cycas and the sporophytes is dominant in the life cycle of Pinus
  • Roots of Pinus have mycorrhiza association and coralloid roots of Cycas are associated with nitrogen-fixing cyanobacteria
  • In Pinus, the male and female cones are borne on different trees and in Cycas on the same tree
Genera like Selaginella and Salvinia:
 
  • do not possess vascular tissues
  • have a dominant gametophyte in their life cycle
  • produce two kinds of spores
  • have macrophylls
In which of the following alga you do not expect to see flagellated structures during their entire life cycle?
  • Porphyra
  • Ectocarpus
  • Ulothrix
  • Laminaria
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