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 biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

Artificial systems of classification were based on

  1. Vegetative characters

  2. Androecium structure

  3. All of these

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

Artificial systems of classification were based on morphological characters such as habit, habitat, colour, number and shape of leaves. They were mainly based on vegetative characters or on the androecium structure.

So, the correct answer is 'All of these'.

Multiple choice biology living world and classification of microbes pathogen and their mode of transmission economic importance of bacteria and fungi five kingdoms of living organisms

In Whittaker's five kingdom system of classification, eukaryotes are distributed among

  1. two kingdoms

  2. three kingdoms

  3. four kingdoms

  4. all the five kingdoms
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

R.H. Whittaker proposed a Five Kingdom Classification. The kingdoms defined by him were named Monera, Protista, Fungi, Plantae, and Animalia. Among five kingdoms, only Monera is prokaryotic and remaining four are Eukaryotic.

So the correct option is "four kingdom".

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

If there is more than one tunica layer in a stern apex. 

Which among the following is most likely to happen?

  1. All the layers will develop into epidermal cells

  2. Only the outer layer will develop into epidermal cells

  3. All the layers will develop into cortex

  4. Inner layer develops into cortex
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Even, if there is more than one tunica layer in the stem apex, only the outer layer will develop into the epidermal cells. The stem has three simple cell types, i.e. the parenchyma, collenchyma and sclerenchyma cells which are responsible for the metabolic functions, repairing and healing wounds and storing starch.

The correct option is B.

Multiple choice biology anatomy of flowering plants theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

A simple leaf can be differentiated from the pinnae of a compound leaf on the basis of presence or absence of

  1. number of pinnae

  2. shape of lamina

  3. axillary bud

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

A simple leaf can be differentiated from the pinnae of a compound leaf on the basis of the presence or absence of 'axillary bud'.

Multiple choice botany plant tissues - internal morphology and anatomy theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

Histogen theory is more applicable for

  1. Root apex

  2. Meristematic tissue

  3. Both (A) and (B)

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The histogen theory was given by Hanstein (1870). The three principal tissues of the root vascular cylinder, cortex and epidermis originate from three groups of initial cells or histogens, in the apical meristem plerome, periblem and dermatogen respectively. A fourth histogen, the calyptrogen, produces the root cap.    
Thus, the correct answer is option A.    

Multiple choice botany plant tissues - internal morphology and anatomy theories of meristematic cell development theories of shoot apical meristem development shoot and root apex

The persisting embryonic tissue in the plant body is called?

  1. Permanent tissues

  2. Parenchyma

  3. Meristem

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

Promeristem is the area of new development in a plant body where the establishment of new organs or parts of organs is started. Some of the time, it is additionally called primordial meristem, meristem and embryonic meristem.

So, the correct answer is 'Meristem'

Multiple choice biology cell - the structural and functional unit of life number and shape of cells unicellular and multicellular organisms diversity and classification in animals

The members of algae found in littoral zone is

  1. Volvox

  2. Spirogyra

  3. Ectocarpus

  4. Ulothrix.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Ectocarpus is widely distributed massive alga which grows on rocks or larger seaweeds in littoral and supra-littoral zone.
Thus, the correct answer is option C.
Multiple choice biology cell - the structural and functional unit of life number and shape of cells unicellular and multicellular organisms diversity and classification in animals

Which one of the following pairs is not correctly matched?

  1. Spirogyra- Conjugation

  2. Volvox - Oogamy

  3. Oedogonium - Cap cell

  4. Ulothrix - Heterocyst
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ulothrix reproduces via zoospores or isogamy/anisogamy, not heterocysts. Heterocysts are specialized cells found in certain cyanobacteria like Nostoc or Anabaena for nitrogen fixation.

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

A perennial plant differs from biennial in

  1. Having underground perennating structure

  2. Having asexual reproductive structures

  3. Being tree species

  4. Not dying after seasonal production of flowers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Perennial plants are plants which can live for more than two years whereas a biennial plant is a flowering plant that takes two years to complete its biological lifecycle. So the difference between perennial plant and biennial is that perennial plants do not die after seasonal flower production.

So, the correct option is D.

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

__________ are plants that go through their entire life cycle in one season and that can be sown outside in the open garden in spring when it flowers.

  1. Hardy annuals

  2. Half hardy annuals

  3. Woody perennials

  4. Ephemeral
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Seedlings of Hardy annuals can easily endure the spring. Hence, they can be sown outside in the open garden in spring on flowering.
So, the correct answer is 'Hardy annuals'