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Which of the following is not a characteristic feature of Cycas ?

A. Circinate venation of foliage leaves

B. Presence of armed parenchyma

C. Presence of motile sperm

D. Absence of vessels in the xylem

Correct Answer :

B. Presence of armed parenchyma


Related Questions

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Non-porous wood occurs in

A. Pinus

B. Mango

C. Dalbergia

D. Ficus

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Fertilization in gymnosperms is

A. isogamous

B. double

C. oogamous

D. siphonogamous

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Transfusion tissue is seen in leaves of

A. Dryopteris

B. Cycas

C. Pinus

D. Both (b) and (c)

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The stem of Pinus plant has

A. closed, conjoint parallel vascular bundles

B. open, conjoint parallel vascular bundles

C. open, separate parallel vascular bundles

D. open, conjoint collateral vascular bundles

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4

Sago-grains are chiefly obtained from

A. Ginkgo biloba

B. Pinus gerardiane

C. Cycas revoluta

D. None of these

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4

The revoluta and circinalis are the species of

A. Pirtus

B. Selaginella

C. Cycas

D. Funaria

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4

Dimorphic leaves are characteristic of

A. Ephedra

B. Cycas

C. Pinus

D. Selaginella

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4

Cycas and Dryopteris resemble each other in the presence of

A. cambium

B. cliliated sperms

C. seeds

D. flowers

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4

Perisperm is remnants of

A. outer integument

B. endosperm

C. funiculus

D. nucellus

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4

Endosperm in gymnosperms is formed

A. at the time of fertilization

B. before fertilization

C. after fertilization

D. before or after fertilization

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4

Pittus is a gymnosperm as it has

A. naked ovules

B. vessels

C. vascular tissue

D. none of these

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4

Monoxylic wood consists of

A. compact wood

B. soft-loose wood

C. compact wood with abundant parenchyma

D. soft-loose wood with abundant parenchyma

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4

Winged seeds are found in

A. Cycas species

B. Pinus species

C. Papaver species

D. None of these

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4

The wing on the seed of Pinus develops from

A. integument and nucellus

B. ovuliferous scale and integument

C. carpellary and ovuliferous scale

D. bract scale and integumnet

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4

Sulphur shower is related to

A. Cycas

B. Pinus

C. Both (a) and (b)

D. None of these

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4

The wood of Cycas consists of

A. vessels only

B. tracheitis only

C. equal number of both

D. more of tracheids and less of vessels

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4

Dwarf shoots of Pinus species have

A. 1-4 leaves

B. 2-5 leaves

C. 2-4 leaves

D. 1-5 leaves

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4

Each stamen in Cycas is a representation of

A. microsporophyll

B. microsporangium

C. megasporophyll

D. megasporangium

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4

The number of integuments of Pinus is

A. one

B. two

C. three

D. four

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4

Coralloid roots of Cycas are

A. positively geotropic

B. apogeotropic

C. phototropic

D. chemotropic

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4

Which of the following orders resembles much more to angiosperms ?

A. Coniferales

B. Gnetales

C. Cycadales

D. Both (a) and (b)

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4

Algal zone is characteristic of

A. roots of Pinus

B. normal roots of Cycas

C. coralloid roots of Cycas

D. stems of Pinus

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4

In Pinus, pollination takes place with the help of

A. water

B. wind

C. insects

D. animals

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4

Cycas is said to be a living fossil because

A. it is found only in China

B. it looks like a fern tree

C. it has ciliated sperms

D. it also occurs as a fossil

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4

Which of the following is not a characteristic feature of Cycas ?

A. Circinate venation of foliage leaves

B. Presence of armed parenchyma

C. Presence of motile sperm

D. Absence of vessels in the xylem

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4

Which of the following is a living fossil ?

A. Pinus

B. Cycas

C. Sequoia

D. Selaginella

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4

Which of the following statements is not true of Pinus ?

A. Presence of ovuliferous scale

B. Embryo with two cotyledons

C. Resin canals in needles

D. Tracheids with bordered pits

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The ovuliferous scales of pine cone are comparable to

A. scales

B. pistils

C. stamens

D. petals

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4

Female cone is absent in

A. Cycas

B. Pinus

C. Taxus

D. None of these

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In Cycas, archegonium has following number of neck canal cells:

A. 4

B. 3

C. 2

D. 0