BIOLOGYFlame Institute

Assertion : All bryophytes are land dwellers. Reason : Water is necessary to complete their life-cycle.

(a) If both the assertion and the reason are true and the reason is a correct explanation of the assertion (b) If both the assertion and reason are true but the reason is not a correct explanation of the assertion …

Assertion : Meiospores form genetically and functionally different progenies. Reason : Mitospores form progenies identical to parents.

Assertion : Spirogyra shows anisogamy. Reason : Gametes are identified on the basis of their motility.

Assertion : Riccia is many cells thick. Reason : Riccia has both assimilatory region and storage region.

Assertion : Liverworts fail to spread to a new locality through fragmentation. Reason : Gemmae are helpful in propagating liverworts in different locality.

Assertion : The embryo of bryophyte is independent. Reason : The zygote of thallophyte is dependent.

Assertion : Bryophytes possess archegonium as a female sex organ. Reason : Algae also possess the archegonium

Assertion : The bryophytes exist in two phases – gametophyte and sporophyte. Reason : The sporophyte is nutritionally independent.

Assertion : The sex organs in the bryophytes are jacketed. Reason : Bryophytes are land plants.

Assertion : Red algae contribute in producing coral reef. Reason : Some red algae secrete and deposit calcium carbonate our their walls.

Assertion : Spirogyra shows haplontic life cycle. Reason : Zygotic meiosis occurs in Spirogyra.

Assertion : Isogamy is a primitive type of sexual reproduction. Reason : The gametes are of different sizes.

Assertion : Spirogyra is slippery in touch. Reason : Spirogyra consists a gelatinous sheath.

Assertion : Only red algae are able to flourish at the great depth of sea. Reason : Red algae has the pigments r-phycoerythrin and r-phycocyanin.

Assertion : Zygospore of Ulothrix forms meiozoospores and meioaplanospores. Reason : Both are motile.

Assertion : All the cells Ulothrix filament are alike. Reason : Ulothrix filament is unbranched.

Assertion : Chlorella could be utilised to keep the air in space vehicles. Reason : The space travellers feed on Chlorella soup.

Assertion : In green algae, the eye-spot is present in the cell. Reason : Eye-spot is meant for respiration.

Assertion : Pyrenoids are utilised during starvation. Reason : Pyrenoids are proteinaceous bodies.

Assertion : Bryophytes and tracheophytes have an embryo stage in their life cycle. Reason : Embryophyta are terrestrial plants.

Assertion : Each group of algae has a characteristic colour. Reason : Each group of algae show predominance of one pigment.

Assertion : Algae and fungi are grouped in thallophyta. Reason : Algae and fungi show no differentiation in thallus.

Assertion : Algae is a collective term for all those chlorophyll bearing organisms which are thalloid. Reason : Presently algae are grouped in three kingdom.

Assertion : Heterotrichous filaments are more advanced than branched filaments. Reason : Heterotrichous filaments have prostrate and projecting system.

Make correct pair

Cyanophyceae a. Green colour Chlorophyceae b. Blue green colour Phaeophyceae c. Red colour Rhodophyceae d. Brown colour (a) Aa, Bb, Cc, Dd (b) Ab, Bc, Cd, Da (c) Ab, Ba, Cd, Bc (d) Ad, Bd, Ca, Db Answer: c …

Match items in Column I with those in Column II

Column I Column II (A) Peritrichous flagellation (J) Ginkgo (B) Living fossil (K) Macrocystes (C) Rhizophore (L) Escherichia coli (D) Smallest flowering plant (M) Selaginella (E) Largest perennial alga (N) Wolffia (a) A – L; B – J; C – …

Of the following group which secrete and deposit calcium carbonate and appear like corals

(a) Red algae (b) Brown algae (c) Blue green algae (d) All of these Answer: a (7)

A protective cap or hood like covering on the developing capsule in a moss or liverwort is known as

(a) Spine (b) Calyptra (c) Lodicule (d) Calyptrogen Answer: b (1)

34. Number of cotyledons is Zea, Cycas and Pinus respectively are

(a) 1,1, many (b) 1,2,1 (c) 1,1,1 (d) 1,2,many Answer: d (5)

A. Heterospory B. Seed formation C. Fertilization process What is appropriate for gymnosperms

(a) AB true C false (b) BC true A false (c) ABC all true (d) ABC all false Answer: c (12)

mature ligule, having a prominent basal portion, is called

(a) Trichocyst (b) Heterocyst (c) Rhizophore (d) Glossopodium Answer: d (17)

When the gametophyte is not formed by spores but by any other part of sporophyte, it is known as

(a) Multispory (b) Polyspory (c) Apospory (d) Germination Answer: c (8)

In which of the following, multiciliated/multiflagelated antherozoids are present

(a) Riccia and Funaria (b) Pteris and Cycas (c) Riccia and Cycas (d) Marchantia and Riccia Answer: b (7)

The endosperm of gymnosperm is

(a) Triploid (b) Haploid (c) Diploid (d) Polyploid Answer: b (16)

Sieve tubes of Pinus have sieve plates on

(a) Radial walls (b) Tangential walls (c) Transverse walls (d) None of the above Answer: a (8)

Heteromorphic alternation of generations occurs is

(a) Funaria, Spirogyra, Selaginella (b) Funaria, Selaginella, Cycas (c) Spirogyra, Rhizopus, Selaginella (d) Rhizopus, Funaria, Spirogyra Answer: b (6)

In Pinus, the approximate time for fertilization after pollination is

(a) Only a few hours (b) Only a few days (c) Only a few weeks (d) About one year Answer: d (11)

In the archegonium of a fern

(a) There are 4 neck canal cells (b) There are 3 neck canal cells (c) There is one neck canal with one nucleus (d) There is one neck canal with two nucleus Answer: d (19)

The mature embryo of Pinus consists of

(a) Radicle and plumule (b) 1+10 cotyledons (c) Radicle, plumule and many cotyledons (d) 3 cotyledons + endosperm Answer: c (17)

The wing of the seed of Pinus develops from

(a) Outer layer of the integument and basal part of the ovuliferous scale (b) Inner layer of the integument and basal part of the ovuliferous scale (c) Only from outer layer of the integument (d) From ovuliferous scale Answer: a …

BIOLOGY

Login with your site account

Register a new account