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

Ubisch bodies are secreted by which of the following?

  1. Tapetum

  2. Exine

  3. Micropore mother cell

  4. Endothecium

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The tapetum secretes a peri-tapetal membrane with Ubisch bodies. It is first secreted with the clusters of globules and then with the exine-like spines on the top of clusters.

Multiple choice

Linnaean system of classification was based on which of the following?

  1. Floral characters

  2. Evolutionary trends

  3. Morphological and anatomical characters

  4. None of the above

  5. -
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Linnaeus's plant taxonomy was based solely on the number and arrangement of the reproductive organs. A plant's class was determined by its stamens (male organs) and its order by its pistils (female organs).

Multiple choice

Discarding a non-needed member is called

  1. adenine

  2. abscission

  3. bacteriophase

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

A plant will abscise a part either to discard a member that is no longer necessary, such as a leaf during autumn, or a flower following fertilisation, or for the purposes of reproduction. Another form of abscission is fruit drop, when a plant abscises fruit while still immature, in order to conserve resources needed to bring the remaining fruit to maturity. If a leaf is damaged, a plant may also abscise it to conserve water or photosynthetic efficiency, depending on the 'costs' to the plant as a whole.

Multiple choice

Identify the CORRECT statements for phylogenetic systems of classification. P. The most popular phylogenetic systems of classification is that of George Bentham and Joseph Dalton Hooker and was published in ‘Genera Plantarum’. Q. A true phylogenetic system of classification was proposed by Adlof Engler and was published in ‘Die Naturlichen Pflanzenfan-ijljen’. R. The phylogenetic system of classification proposed by John Hutchinson was appeared in ‘The Families of Flowering Plants’. S. The origin of dicot from primitive monocot was proposed by Arthur Cronquist in his book ‘Systema Naturae’.

  1. Q, R

  2. P, Q

  3. R, S

  4. P, S
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statement Q is correct (Engler). Statement R is correct (Hutchinson). Statement P is incorrect (Bentham and Hooker is a natural system, not phylogenetic). Statement S is incorrect (Cronquist did not propose dicots from monocots).

Multiple choice botany taxonomic aids taxonomy and systematic botany indian botanical gardens and herbarium importance of herbarium botanical gardens in india

Number of species growing in botanical gardens world wide is

  1. 7500

  2. 25,000

  3. 57,000

  4. 80,000
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
  • A botanical garden or botanic garden is a garden dedicated to the collection, cultivation, preservation, and display of a wide range of plants labelled with their botanical names or It is an establishment where plants are grown for scientific study and display to the public.
  • There are now estimated to be 1775 botanic gardens in 148 countries around the world with many more under construction.
  •  Kew Royal Gardens in London, England has the world's largest collection of living plants.
  • The number of species growing in botanical gardens worldwide is about 80,000.
  • So,the correct answer is '80,000'.