Tag: pictorial feature of plant kingdom

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Questions Related to pictorial feature of plant kingdom

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

In angiosperms, the egg is?

  1. Completely surrounded by a wall

  2. Surrounded by a wall only at the micropylar end

  3. Surrounded by a wall only at the chalazae end

  4. Devoid of wall
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In angiosperms, the egg cell within the embryo sac is a distinct cell enclosed by a plasma membrane and a cell wall, unlike some primitive plants where gametes might be naked.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Which of the following characters represent the affinities of Gnetum with angiosperms and differences with Cycas and Pinus?

  1. Presence of xylem vessels and absence of archegonia

  2. Perianth and two integuments

  3. Embryo development and apical meristem

  4. Absence of resin ducts and leaf venation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Gnetum is considered to have affinities with angiosperms because it possesses xylem vessels and lacks archegonia, which are absent in angiosperms but present in other gymnosperms.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

All the following are the adaptations of land plants except

  1. Protection of the embryo from drying out

  2. Waxy cuticle on leaves to prevent drying out

  3. Waxy cuticle on roots to prevent drying out

  4. Vascular system (in most plants) to move water internally
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Land plants have the vascular system for the movement of water and food internally this includes xylem and phloem.
The embryo is protected from drying out by providing the membranes which help in protecting the embryo.
There is a waxy cuticle on the leaves and this acts as a barrier for the excessive water loss which happens due to transpiration and this prevents leave from drying.
There is no waxy cuticle on the roots as if there is a waxy cuticle on the root then it would be very difficult to absorb water.
So, the correct option is 'waxy cuticle on roots to prevent them from drying out.'
Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

'Wheat' belongs to division ____

  1. Bryophyta

  2. Pteridophyta

  3. Gymnosperms

  4. Angiosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Species of wheat belongs to genus Triticum. Wheat is a type of food crop. Wheat has seeds which as used as food to human beings. Angiosperms include seed containing plants.

So, the correct option is 'Angiosperms'.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

The first true angiosperm evolved from an ancestor is

  1. Arceuthobium

  2. Gnetum

  3. Cycas

  4. Taxus
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Richard Y-wettstein (Gnetales-angiosperms theory), Gnetales and angiosperms are closely related to each other, because of morphological similarities in the flowers of Gnetum and pro-angiosperms and thus might have originated from common ancestors.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Double fertilization and triple fusion are characteristic of

  1. Spermatophyta

  2. Gymnosperms

  3. Pteridophyta

  4. Angiosperms
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The process in which both nuclei from the pollen tube fuse is referred to as double fertilization. This is perhaps the most characteristic single feature of angiosperms and is not shared with any other group. Gymnosperms, in sharp contrast, have a multicellular female gametophyte, that consists of many hundreds or even thousands of cells. Double fertilization does not take place in this case, and the female gametophyte develops into the food-storage tissue of the seed.

Therefore, the correct answer is option D.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Vessels and companian cells are found in

  1. Pteridophyte

  2. Gnetum

  3. Ephedra

  4. Angiosperm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Angiosperms or flowering plants are those plants in which seeds are formed inside fruits and the sporophylls are organised into flowers. They are the most recently and highly evolved plants appeared on Earth about 130 million years ago. The plant body is differentiated into root, stem and leaves. At maturity the plants bear flowers, which produces fruits and seeds. The vascular tissues are arranged in the form of vascular bundles. Xylem contains vessels and phloem has sieve tubes and companion cells. 

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Botanical name of Amla is ______________.

  1. Ocimum sanctum

  2. Phyllanthus emblica

  3. Saraca indica

  4. Ficus bengalensis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Characteristics of monocot :-
1) Roots are adventitious
2) Embryo has single cotyledon
3) Pollens have single pore
4) Secondary growth is absent
5) Flower has parts in multiples of three
6) Leaf veins are parallel
7) Seeds possess one cotyledon
8) Vascular bundles appear to scatter through the stem cross-section
Botanical name of Amla is Phyllanthus emblica.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

When we cut any of the gram seeds exactly at their centre transversely, we can find the parts separated in to two equal halves. By keeping this as a main feature, to which group of Plantae we can classify them in to?

  1. Angiospermic monocot

  2. Gymnosperm

  3. Angiospermic dicot

  4. Both A and C
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

An angiospermic dicot seeds has a protective seed around it. It is made up of 2 cotyledons. The outer seed coat is called testa and inner seed coat is called tegmen. It's embryonic axis has 3 parts, plumule, radicle and hypocotyl.

So, option C is the correct answer.

Multiple choice biology pictorial feature of plant kingdom phanerogams gymnosperms angiosperms

Angiosperms have dominated the land flora primarily by their

  1. Power of adaptability to diverse habitats

  2. Nature of pollination

  3. Domestication by humans

  4. Large number of seeds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Angiosperms dominate because they are highly adaptable to diverse environments, aided by efficient water transport (vessels), double fertilization, and fruit-protected seeds.