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May 2022

Home2022MayPage 12

Which of the following is not common in Funaria and Selaginella

(a)  Roots                                  (b)  Archegonium (c)   Embryo                              (d)  Motile sperms Ans. a (5)

In which one of the following species of Selaginella, the apex continues its vegetative growth beyond the formation of strobilus

(a)  S. helvetica                         (b)  S. cuspidiata (c)   S. rupestris                         (d)  None of these Ans. b (4)

The basal portion of ligule of Selaginella is hemispherical and is called

(a)  Glossopodium                   (b)  Awn of ligule (c)   Bundle sheath                   (d)  Pedicel of ligule Ans. a (8)

Which of the following is not correct with reference to Selaginella

(a)  Selaginella is commonly distributed on hills and plains (b)  Some species of Selaginella are truly xerophytic (c)   The vascular...

Trabeculae endodermis is found in

(a)  Axis and capsule of moss plant (b)  Stem of Selaginella (c)   Stem of Cycas (d)  Stem of Pinus Ans....

In Selaginella megaspores are about how many times larger than microspores

(a)  Five times                          (b)  Ten times (c)   Twenty times                    (d)  Hundred times Ans. d (24)

In Dryopteris the opening mechanism of sporangium is effectively operated by

(a)  Stalk                                   (b)  Stomium (c)   Annulus                             (d)  None of these Ans. b (10)

122. The Poisson’s ratio cannot have the value

(a)  0.7                                     ...

Selaginella has the character of evolutionary importance. That character is

(a)  Ligule                                 (b)  Seed (c)   Heterospory                      (d)  Strobilus Ans. c (13)

Selaginella differs from Pteris (fern) in which of the following character

(a)  Absence of seed (b)  Absence of vessels in xylem (c)   Need water for fertilization (d)  Heterosporous condition Ans. d...

Antherozoids of Selaginella has

(a)  Elongated body with many flagella (b)  An elongated body with two flagella at one end (c)   Top shaped body...

Megasporangium of Selaginella is equivalent to which structure of Pinus

(a)  Ovule                                     ...

In Selaginella male gametes are

(a)  Aflagellated                       (b)  Monoflagellated (c)     Biflagellated                   (d)   Multiflagellated Ans. c (8)

Rhizophore of Selaginella is

(a)  Positively geotropic (b)  Negatively geotropic (c)   Apogeotropic (d)  None of the above Ans. a (24)

Stele of Selaginella stem is

(a)  Protostelic                         (b)  Eustelic (c)   Dictyostelic                        (d)  Solenostelic Ans. a (6)

Ligulate leaves are found in

(a)  Mosses                               (b)  Selaginella (c)   Fern                                   (d)  Pinus Ans. b (9)

Rhizophores are formed in

(a)  Bryophytes                        (b)  Selaginella (c)    Pteridium                        (d)   Gymnosperms...

6. If the volume of the given mass of a gas is increased four times, the temperature is raised from 27°C to 127°C. The elasticity will become

(a)   4 times                                   (b)  ...

5. The ratio of the adiabatic to isothermal elasticities of a triatomic gas is

(a)  3/4                                     ...

4. The only elastic modulus that applies to fluids is

  (a)   Young’s modulus                (b)   Shear modulus (c)   Modulus of rigidity             (d)   Bulk modulus Answer-d (17)

What is correct

(a)  Protonema of moss and prothallus of Dryopteris are sporophytic (b)  Protonema of moss and prothallus of Dryopteris are gametophytic...

3. The specific heat at constant pressure and at constant volume for an ideal gas are

The specific heat at constant pressure and at constant volume for an ideal gas are Cp and Cv and its...

In Dryopteris

(a)  Sporophyte is parasitic over gametophyte (b)  Sporophyte is independent (c)   Gametophyte is independent (d)  Both (b) and (c) Ans....

Indusium in Pteridium is

(a)  Outer true and inner false (b)  Only true (c)   Outer false and inner true (d)  Only false Ans. c...

The stele of Pteridium root is

(a)  Diarch exarch                   (b)  Diarch endarch (c)   Polyarch exarch                (d)  Polyarch endarch Ans. a (9)

Sorus bearing leaf of Pteridium is called

(a)  Ramenta                            (b)  Indusium (c)   Sporophyll                         (d)  None of these Ans. c (4)

2. The adiabatic elasticity of a gas is equal to

(a)  γ×density                                    (b)   γ×volume (c)   γ×pressure                             ...

Young sporophyte of Pteris fern draws nourishment from prothallus through

(a)  Root                                    (b)  Rhizoids (c)   Foot                                    (d)  Haustoria Ans. c (16)

The stele in the rachis of Pteris is

(a)  Collar shaped                    (b)  Horse shoe– shaped (c)   Omega shaped                  (d)  H- shaped Ans. b (14)

Pteris differs from Funaria in having

(a)  Dependent sporophyte (b)  An independent gametophyte (c)   Swimming antherozoids (d)  Dominant sporophytic phase Ans. d (49)

In Pteris, the sori are

(a)  Continuous and linear (b)  Discontinuous and circular (c)   Discontinuous and reniform (d)  Discontinuous and vermiform Ans. a   (6)

Spores of Dryopteris are

(a)  Haploid                              (b)  Diploid (c)   Triploid                              (d)  Tetraploid Ans. a (7)

1. The isothermal elasticity of a gas is equal to

(a)  Density                                           (b)   Volume (c)   Pressure                             ...

The development of Dryopteris

(a)  Eusporangiate                  (b)  Leptosporangiate (c)   Both (a) and (b)               (d)  None of these Ans. b (10)

Fern Dryopteris is

(a)  Homosporous                    (b)  Heterosporous (c)   Both (a) and (b)                (d)  None of these Ans. a (8)

Sporophyte of Pteris is

(a)  Independent of gametophyte from the very beginning (b)  Dependent upon gametophyte only in the beginning (c)   Dependent on gametophyte...

125. Four identical rods are stretched by same force. Maximum extension is produced in

(a)  L=10cm ,D=1mm                 (b)  L=100cm ,D=2mm (c)  L=200cm ,D=3mm          ...

The stele is arranged in the form of ‘C’ in which portion of fern plant (Dryopteris)

(a)  Rhizome                             (b)  Young rachis (c)   Old rachis                          (d)  Lamina Ans. b (9)

Sorus of Dryopteris fern is

(a)  Simple sorus                     (b)  Gradate sorus (c)   Mixed sorus                       (d)  None of these Ans. c (8)

124.

A material has Poisson’s ratio 0.50. If a uniform rod of it suffers a longitudinal strain of 2×10-3 , then...
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