Gymnosperms Test 2

Total Questions:50 Total Time: 75 Min

Remaining:

 

Questions 1 of 50

Question:In gymnosperms pollination is exclusively by

Answers Choices:

Animals

Wind

Water

Insects

Questions 2 of 50

Question:Fruits are not found in gymnosperms plants because

Answers Choices:

They are seedless plants

They are not pollinated

They have no ovary

Process of fertilization does not take place in them

Questions 3 of 50

Question:Which is the smallest gymnosperm among the following

Answers Choices:

Cycas

Pinus

Zamia

Gnetum

Questions 4 of 50

Question:Red wood tree is

Answers Choices:

Cedrus

Pinus

Dalbergia

Sequoia

Questions 5 of 50

Question:The roots of gymnosperms is

Answers Choices:

Tap root

Adventitious roots

Rhizoid

Rhizophores

Questions 6 of 50

Question:In gymnosperms, pollen drop is the

Answers Choices:

Red drop

Pollens droped by wind

Secretion of nucellus

Water drops

Questions 7 of 50

Question:Which of the following is not the feature of gymnosperms

Answers Choices:

Parallel venation

Perennial plants

Distinct branches (long and short branches)

Xylem with vessels

Questions 8 of 50

Question:In gymnosperms how many male gametes are produced by each pollen grain

Answers Choices:

4

3

2

1

Questions 9 of 50

Question:A typical gymnospermous plant has 8 chromosomes in leaf cells. What will be number of chromosomes in the cells of its gametophyte

Answers Choices:

16

8

4

24

Questions 10 of 50

Question:Conifers differ from grasses in the

Answers Choices:

Absence of pollen tubes

Formation of endosperm before fertilization

Production of seeds from ovules

Lack of xylem tracheids

Questions 11 of 50

Question:The male cone of Pinus is modified

Answers Choices:

Long shoot

Needle leaves

Dwarf shoot

None of the above

Questions 12 of 50

Question:Which of the following structures in Pinus are haploid

Answers Choices:

Megaspore, integument, root

Endosperm, megaspore, pollen grain

Pollen grain, leaf, root

Megaspore, endosperm, embryo

Questions 13 of 50

Question:Pine wood consists of almost entirely

Answers Choices:

Tracheids

Vessels

Equal number of tracheids and vessels

More vessels and less tracheids

Questions 14 of 50

Question:Winged seeds are found in

Answers Choices:

Cycas

Pinus

Papaver species

None of the above

Questions 15 of 50

Question:In Pinus seeds there are

Answers Choices:

Two cotyledons

One cotyledon

Fleshy cotyledons

Many cotyledons

Questions 16 of 50

Question:In Pinus, the spur (dwarf shoot) has

Answers Choices:

One needle

Two needles

Three needles

All correct

Questions 17 of 50

Question:The secondary wood of Pinus is characterised by

Answers Choices:

Presence of resin cells

Presence of resin ducts

Absence of resin ducts

Presence of vessels

Questions 18 of 50

Question:Which one of the following alternatives represents the gametophytic phase in Pinus

Answers Choices:

Pinus plant

Zygote

Micro and megaspores

Male and female cones

Questions 19 of 50

Question:In Pinus, male cone bears a large number of

Answers Choices:

Ligules

Anthers

Micro-sporophylls

Mega-sporophylls

Questions 20 of 50

Question:Cleavage polyembryony occurs in

Answers Choices:

Pinus

Mini

Cycas

Cycas

Ephedra

Questions 21 of 50

Question:In Pinus megaspore on germination forms

Answers Choices:

Pollen tube with two motile sperms

Endosperm with archegonia

Endosperm with sperms

Endosperm with embryo sac

Questions 22 of 50

Question:Endosperm of Pinus is

Answers Choices:

Male gametophyte

Female gametophyte

Sporophyte

None of the above

Questions 23 of 50

Question:Pinus shows

Answers Choices:

Simple polyembryony

Cleavage polyembryony

Both simple and cleavage polyembryony

None of the above

Questions 24 of 50

Question:Pinus seed shows

Answers Choices:

Hypogeal germination

Epigeal germination

Dormancy

None of the above

Questions 25 of 50

Question:Transfusion tissue, a modified vascular tissue is present in the leaves of

Answers Choices:

Pinus

Dryopteris

Lycopodium

Dalbergia

Questions 26 of 50

Question:A microsporophyll in Pinus has

Answers Choices:

One microsporangium on the adaxial side

One microsporangium on the abaxial side

Two microsporangia on the abaxial side

Two microsporangia on the adaxial side

Questions 27 of 50

Question:(e)    Four microsporangia on the lower side

Answers Choices:

Plant of pine is

Annual herb

Biannual herb

Evergreen tree

Deciduous tree

Questions 28 of 50

Question:The giant tree among the pines belongs to

Answers Choices:

Cedrus

Pinus

Dalbergia

Sequoia

Questions 29 of 50

Question:Siphonogamous fertilization takes place in

Answers Choices:

Bryophytes

Selaginella

Fern

Pinus

Questions 30 of 50

Question:Female cone of Pinus is considered equivalent to

Answers Choices:

Dwarf shoot

Long shoot

Needles

Scale leaves

Questions 31 of 50

Question:Fern character in Cycas is

Answers Choices:

Coralloid roots

Tap root system

Circinate venation

Reticulate venation

Questions 32 of 50

Question:Coralloid roots of Cycas are useful in

Answers Choices:

N2-fixation

Absorption of water

Transpiration

Fixation

Questions 33 of 50

Question:Cycas circinalis is a source of

Answers Choices:

Resin

Timber

Essential oil

Starch (Sago)

Questions 34 of 50

Question:The stem of female Cycas plant is a

Answers Choices:

Monopodium

Sympodium

Rhizomatous

Dichotomous

Questions 35 of 50

Question:Sterile part of Cycas microsporophyll is

Answers Choices:

Apophysis

Sporophore

Middle part

Lower part

Questions 36 of 50

Question:Wood of Cycas is

Answers Choices:

Monoxylic and manoxylic

Manoxylic and polyxylic

Diploxylic.

Monoxylic

Questions 37 of 50

Question:Cycas contains

Answers Choices:

Mucilage ducts

Laticiferous vessels

Resin ducts

Oil ducts

Questions 38 of 50

Question:In Cycas, pollination is by

Answers Choices:

Wind

Insect

Water

Both (1) and (2)

Questions 39 of 50

Question:In Cycas, the ovules artlStsftached to megasporophyll

Answers Choices:

Laterally

Dorsally

Ventrally

Apically

Questions 40 of 50

Question:Cycas resembles angiosperms in having

Answers Choices:

Circinate vernation in leaves

Vessels

Motile sperms

Ovules

Questions 41 of 50

Question:What is true about foliage of Cycas

Answers Choices:

Palmate and pinnate foliage leaves

Brown scales and unpinnately green foliage leaves

Oblong and long leaves

Green and scaly leaves

Questions 42 of 50

Question:Diploxylic condition occurs in Cycas in

Answers Choices:

Root

Stem

Coralloid root

Leaflet

Questions 43 of 50

Question:Microsporangia of Cycas occur over microsporophyll

Answers Choices:

Adaxially

Abaxiaily

Laterally

Marginally

Questions 44 of 50

Question:The microsporophyll of Cycas represents a

Answers Choices:

Male gamete

Stamen

Pollen grain

Pollinium

Questions 45 of 50

Question:Cycas trunk is covered with

Answers Choices:

Leaves

Leaf bases

Scale leaves

Both (1) and (2)

Questions 46 of 50

Question:Leaves in Cycas show

Answers Choices:

Hydrophobic characters

Xerophytic characters

Mesophytic characters

Lithophytic characters

Questions 47 of 50

Question:Cycas belong to gymnosperm due to

Answers Choices:

Naked seed without fruit

Living fossils

Vessel present in xylem

Habitat

Questions 48 of 50

Question:In Cycas

Answers Choices:

Male strobilus and megasporophylls occurs on the same individual

The same cone consists of both micro and megasporophylls

The same sporophyll bears microsporangia and ovules

Male strobilus (cone) and megasporophylls occur on separate individuals

Questions 49 of 50

Question:Secondary wood of Cycas is devoid of

Answers Choices:

Tracheids

Vessels

Protoxylem

Metaxylem

Questions 50 of 50

Question:Polyembryony seen in Cycas is

Answers Choices:

Potential true polyembryony

Potential true polyembryony and cleavage polyembryony

Adventive polyembryony

All of these