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

In vedic times living organisms were classified into following classes.

  1. 2

  2. 3

  3. 4

  4. 5
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • In Vedic times, the; living organisms were divided into 3 classes. They are
  1. Born from the womb (Jivagi)
  2. Born from egg (Andaja)
  3. Born from sprouts (Udbhija)
  • Hence In Vedic times, living organisms were classified into 3 classes.
  • So, the correct answer is '3'
Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Phanerogamae having vascular tissue and reproductive tissue

  1. Thallophyta

  2. Bryophyta

  3. Phanerogamae

  4. All of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Thallophyta and bryophyta are cryptogams. They do not have vascular tissue and reproductive tissue, they are non-vascular plants and they reproduce asexually by formation of spores. They are flowering plants and have vascular and reproductive tissue.

So, the correct answer is 'Phanerogamae'.

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Angiosperms are classified into 

  1. Phanerogams and cryptogams

  2. Thallophytes and bryophytes

  3. Monocots and dicots

  4. Vertebrates and invertebrates
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Angiosperms are also called as flowering plants that are classified based on characteristics that include cotyledon structure, pollen grains, as well as flower and vascular tissue arrangement. Basal angiosperms, classified separately, contain features found in both monocots and dicots, as they are believed to have originated before the separation of these two main groups. Monocots contain a single cotyledon and have veins that run parallel to the length of their leaves; their flowers are arranged in three to six-fold symmetry. Dicots have flowers arranged in whorls, two cotyledons, and a vein arrangement that forms networks within their leaves. 

Therefore, the correct answer is option C.

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Angiosperms are subdivided into two classes which are cotyledons and dicotyledons.

  1. True

  2. False

  3. Ambiguous

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

Phanerogamae are the sub-kingdom of kingdom Plantae. They include seed bearing and flowering plants. They are further grouped into angiosperms and gymnosperms. Angiosperms are subdivided into two classes which are cotyledons and dicotyledons depending on the number of cotyledons in their embryo.

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Centrospermae is regarded a natural order of angiosperms. All except two of its families contain the pigments that are collectively called battalions. Some of the families of the order are enumerated below. Which two families lack betalains?
a. Amaranthaceae
b. Aizoaceae
c. Chenopodiaceae
d. Caryophyllaceae
e. Mouginaceae
Select the correct answer using the codes given.

  1. $1$ and $2$
  2. $2$ and $3$
  3. $3$ and $4$
  4. $4$ and $5$
Reveal answer Fill a bubble to check yourself
D Correct answer
Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Which fossil group formed the basis of Anthostrobilus theory of origin of angiosperms?

  1. Caytaniales

  2. Cycadeoidales

  3. Czekanowskiales

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

The Anthostrobilus theory, proposed by Arber and Parkin, suggests that angiosperms evolved from an extinct group of gymnosperms called Caytoniales (often spelled Caytoniales).

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

The plant 'Hibisus' belongs to division _____

  1. Bryophta

  2. Pteridophyta

  3. Gymnosperms

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

A.Bryophyta – chlorophyllous, aquatic, embryophytic, archegoniatic, plants in the plant kingdom. These are also called amphibian of the plant kingdom.

B.Pteridophyta – Chlorophyllous, terrestrial, embryophytic, tracheophytes in the plant kingdom. These are also called vascular cryptogams.

C.Gymnosperms – Naked seeded plants in the plant kingdom.

D.Angiosperms -  Fruit producing plants in the plant kingdom. These are highly advanced plants. Hibiscus is an angiosperm.

So, the correct option is ‘ Angiosperms’.

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Consider the following statements:

(a) Plants are divided into five groups: Thallophytes, Bryophytes, Pteridophytes, gymnosperms, and Angiosperms.
(b) Monera is divided into Archaebacteria and Eubacteria.
(c) $Penicillium$ and Yeast both belong to group fungi.

Which of the above statements are correct?

  1. (a) and (b)

  2. (b) and (c)

  3. (a), (b) and (c)

  4. None of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The first level of classification among plants depends on whether the plant body is well-differentiated or not. The next level of classification is based on whether the differentiated body has special vascular tissues for the transport of water and other substances. Further classification is based on the ability to bear seeds and whether the seeds are naked or enclosed within fruits. 
Monera is a kingdom that contains unicellular organisms with no nuclear membrane, such as bacteria. It can be divided into Archaebacteria and Eubacteria.
A fungus is any member of a large group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. Penicillium and Yeast both belong to group fungi.

Multiple choice botany plant biology introduction to angiosperms phanerogams angiosperms

Find out and select the incorrect pair from the following.

  1. Phanerogamae- Gymnosperms and angiosperms

  2. Angiosperms- Monocotyledonous and dicotyledonous

  3. Cryptogamae- Bryophyta and Pteridophyta

  4. Pteridophytes- Horsetails and mosses
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mosses are small flowerless plants that usually grow in dense green clumps or mats, in damp or shady locations. They are bryophytes in the nature.

The horsetails are a class in the Pteridophyta (ferns). They were one of the most important plant groups in the Palaeozoic era.
Therefore, the correct answer is option D.

Multiple choice zoology earthworm structure of earthworm earthworm - morphology, integumentary system , respiration and nervous system adaptations

Pheretima is

  1. Arboreal

  2. Scansorial

  3. Fossorial

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

Pheretima is a fossorial animal that lives in moist soil burrows. In summer, when the topsoil is dry, earthworms burrow deep into the soil. The earthworm burrows are lined by slimy secretion of its body. Temperature regulation while others use the underground habitat for protection from predators or for food storage.

So the correct answer is "Fossorial".

Multiple choice zoology animal diversity - i (inverterbrate phyla) ctenophora phylum ctenophora cnidaria

Find out the odd one.

  1. Adamsia

  2. Astraea

  3. Physalia

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

Adamsia, Astraea and Physalia belong to the phylum Cnidaria (Coelenterata). Cnidarians are aquatic, mostly marine, solitary or colonial sessile or free swimming, radially symmetrical animals. These phyla are divided into three classes Hydrozoa, Scyphozoa, and Anthozoa. Pleurobrachia belongs to the phylum Ctenophora.

So the correct answer is 'Pleurobrachia'.

Multiple choice gymnosperms pictorial feature of plant kingdom biology

Which of the following order of gymnosperm has totally become extinct?

  1. Cycadales

  2. Ginkgoales

  3. Gnetales

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

Cycadofilicales, also known as Pteridosperms or seed ferns, are an entirely extinct order of gymnosperms.