Biology

Plant Biology and Classification

1,796 Questions

Plant Biology and Classification deals with the taxonomy, evolution, and morphological features of the plant kingdom. This collection offers practice questions on plant groups, taxonomic hierarchies, and specific plant characteristics. The questions are tailored for students preparing for biology competitive exams.

Plant taxonomyPteridophytesAngiospermsPlant morphologyAlgae and bryophytesClassification systems

Plant Biology and Classification Questions

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

Independent alternation of generations is present in

  1. Angiosperms

  2. Gymnosperms

  3. Pteridophytes

  4. Bryophytes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The Pteridophytes are independent of alteration in generation. They can live “independent of the parent plant”. While gametophytes cannot live independently and are very small. The pteridophytes have a vascular plant.

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

The plants that live for more than two years are called :

  1. Annuals

  2. Perennials

  3. Biennials

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

A.Annuals – Plants with a life span of one year or one season.

B.Perennials – Plants with a life span of more than two years.

C.Biennials – Plants with a life span of two years

D.Triennials – Plants with a life span of three years.

So, the correct option is ‘Perennials’

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

Haplo-diplontic life cycle is found in ____________.

  1. bryophytes

  2. pteridophytes

  3. fungi

  4. both (a) and (b)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Haplo-diplontic type of life cycle involves the clear alternation of generations between a haploid gamete producing gametophyte and a diploid spore-producing sporophyte. Both bryophytes and pteridophytes exhibit this kind of life cycle pattern.

So the correct option is D.

Multiple choice botany types and parts of plants plant life cycle alternation of generations life span

Identify the correct statement regarding a Monocarpic plant.

  1. Flowers twice in every year

  2. Bears only one type of flower

  3. Flowers once in every year

  4. Dies after flowering once in its life cycle.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Monocarpic plants are those plants which bear flower once in their life cycle, produce seeds and then die. It means they reproduce once in its life cycle. 

Examples; rice, wheat, radish and carrot.
So, the correct option is 'Option D'.

Multiple choice botany pollination, fertilization and development of endosperm and embryo fruits and seeds fruit and its type fertilization events

Endosperm is absent in

  1. Podostemonaceae

  2. Orchidaceae

  3. Trapaceae

  4. All the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
During double fertilization, the fusion of one sperm with the egg cell forms the embryo and that of the other sperm with a polar nucleus gives rise to the endosperm. The families that lack an endosperm include Orchidaceae, Podostemaceae, and Trapaceae.

So, the correct answer is 'All the above'.
Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

All of the following parts of the plant is present in pitcher plant except.

  1. Leaves

  2. Roots

  3. Stem

  4. Seeds
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • Pitcher plants are the several different carnivorous plants. These have modified leaves known as pitfall traps. 
  • These are having a prey-trapping mechanism. 
  • The traps of are true in pitcher plants and are formed by the specialized leaves.
  • So, we can say that pitcher plants don’t have leaves.
  • The correct option is A.  

Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

Which part of the Nepenthes is modified into a pitcher?

  1. Leaf

  2. Stem

  3. Root

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Pitcher plants or Nepenthes is a carnivorous plant that has modified leaves to form a pitcher which traps its prey or insect for consumption as they live in Nitrogen deficient soil.
So, the correct answer is 'Leaf'
Multiple choice evs seeds and seeds plant adaptation and modification leaves leaf modification

Plants that grow in nitrogen deficient soils and swampy and boggy places are called 

  1. Epiphytic

  2. Insectivorous

  3. Saprophytic

  4. Parasitic
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
A.Epiphytic - Plants which grow on the branches of big trees for light and shelter. These plants are not connected to soil directly.
B.Insectivorous plants - Plants, trap, kill and digest insects are called insectivourous plants. They grow in nitrogen deficient soils. So, to get nitrogen the kill and digest the insects.
C.Saprophytic - Organisms, grow on the dead bodies to get food.
D.Parasitic - relationship between two species of plants or animals in which one benefits at the expense of the other, sometimes without killing the host organism.
So the correct option is 'insectivorous'.
Multiple choice biology seeds - structure and germination dicot seed monocot seed structure of monocot and dicot seed

Modern day (advanced) plants are

  1. Monocots

  2. Dicots

  3. Gnetales

  4. Ferns
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Plants are classified into two main groups: the bryophytes (nonvascular plants) and the tracheophytes (vascular plants). The tracheophytes include ferns, gymnosperms and angiosperms, and are characterized by specialized vascular tissues- the phloem and xylem. The study of living species suggests that angiosperms evolved from the gnetophytes, a group of gymnosperms. however, the oldest known angiosperms were a diverse group of plants called magnoliids from which dicots and monocots are evolved. Monocots are more advanced plants than dicot.

Multiple choice biology seeds - structure and germination dicot seed monocot seed structure of monocot and dicot seed

The exceptional example of a monocotyledonous plant having a central red midrib is

  1. Date palm (Phoenix dactylifera)

  2. Banana (Musa sp.)

  3. Indian shot (Canna indices)

  4. Bird of paradise flower (Strelitzia reginae)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The 'bird of paradise flower', or 'crane flower' as it is sometimes known, was first introduced into Britain in 1773 by Sir Joseph Banks. The plant itself can reach up to 5 feet in height with a 2-3 foot spread. The plant is trunk less, compact and clustering but slow growing with fleshy roots. S. reginae has banana shaped stiff- leathery, concave, oblong, bluish-gray leaves with a pale or red midrib. The leaves are attached to a long stalk that sometimes reaches up to 2 feet in length.

Multiple choice zoology why classification? history of classification of organisms introduction to classification of living organisms living world and classification

Phylogenetic system of classification was proposed by:

  1. Linnaeus

  2. Hutchinson

  3. Bentham

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

The phylogenetic system of classification, which attempts to classify organisms based on their evolutionary relationships and descent, was proposed by John Hutchinson, as well as others like Engler and Prantl. Among the choices, Hutchinson represents a major phylogenetic system.