EASY
Earn 100

State true (T) or false (F) for the given statements and choose the correct option

a.  Eucalyptus is one of the tallest plant species

b.  Primary  endosperm  nucleus (PEN)  of angiosperms is a triploid structure

c.  Embryo sac is a 3-celled structure

50% studentsanswered this correctly

Important Questions on Plant Kingdom

EASY
Which statements regarding heterospory are correct?
(i) The megaspores and microspores germinate and give rise to female and male gametophytes respectively
(ii) The female gametophytes in these plants are retained on the parent sporophytes for variable periods
(iii) The development of the zygotes into young embryos takes place within the female gametophytes
(iv) This event is a precursor to the seed habit considered as an important step in the evolution
MEDIUM
Choose the correct statements from the following:
A) Meiosis has to occur if a diploid body has to produce gametes
B) In Cladophora it is not possible to categorise the male and female gametes
C) Organisms exhibiting external fertilization show greater synchrony between sexes
D) In Wolffia isogametes can be seen
EASY

Match the following lists.

List I List II
A) Submerged rooted hydrophyte I) Hydrilla
B) Rooted hydrophyte with floating leaves II) Salvinia
C) Free floating hydrophyte III) Victoria regia
D) Submerged suspended hydrophyte IV) Limnophila
  V) Vallisneria

The correct match is:

EASY

Assertion (A): Petro plants yield bio-diesel.

Reason (R): Jatropha is rich in hydrocarbons.

EASY
Male and female gametophytes do not have an independent free living existence in:
EASY
Features which are highly unique to angiosperms
I) Multicellular, much reduced and dependent gametophyte
II) Siphonogamous fertilization
III) Fusion of male gametes with egg cell and secondary nucleus
IV) Development of ovule into seed
EASY
Choose the incorrect statements among the following.
A) The female sex organs of Angiosperms are called strobilus.
B) The fusion of motile male gamete with non-motile egg is called zooidogamy.
C) Some algae are in association with animals.
D) Archegonium is flank shaped male sex organ with single cell.
EASY
Male gametophyte with the least number of cells is present in:
EASY
Reason for extensive distribution of monocotyledons plants like wheat, maize and barley on the earth's surface are
I) Equal distribution of water and air in the habitat
II) Adaptation to excessive water and extensive dryness
III Do not show adaptation to extensive dryness
IV) Grow in excessive water and extensive dry areas
MEDIUM
Identify the plant that possess all the following characters
A) Xylem and phloem are main conducting elements.
B) Pollen grains are carried by wind.
C) Transfer of pollen is direct.
D) Ovules develop into seeds after fertilisation.
EASY

The plant parts which consist of two generations one within the other:

(a) Pollen grains inside the anther
(b) Germinated pollen grain with two male gametes
(c) Seed inside the fruit
(d) Embryo sac inside the ovule

EASY
The morphological nature of the edible part of coconut is
EASY
Assertion: Angiosperms are mostly terrestrial.

Reason: Angiosperms are found in plains only.
EASY
Angiosperm, to which the largest flowers belong, is
EASY
Assertion: Angiosperms are most recent plants.

Reason: Angiosperms lack archegonia.
EASY
Assertion: Angiosperms lack flagellate male gametes.

Reason: Sperms are not dependent on water for fertilization.
EASY
Assertion: Double fertilization is unique to angiosperms.

Reason: Triple fusion occurs in double fertilization.
EASY
Assertion: Angiosperm and Gymnosperms both are spermatophyta.

Reason: Angiosperm and Gymnosperms both form triploid endosperm.