Biology

Plant Biology and Classification

1,473 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

Which of the following statements is/are false?

a. For plants, scientific names are based on agreed principles and criteria, which are provided in International Code for Botanical Nomenclature. b. The scientific names ensure that each organism has only one name and that such a name has not been used for any other known organism. c. In the scientific name Mangifera indica, 'Mangifera' represents a particular species, while 'indica' represents a genus.

  1. Only a

  2. Both a and b

  3. Only b

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

This is the correct option as this statement is false.

Multiple choice

From the given statements, identify the incorrect one.

  1. Key is taxonomical aid used for identification of plants and animals based on the similarities and dissimilarities.

  2. The keys are based on the contrasting characters generally in a pair called couplet.

  3. It represents the choice made between two opposite options.

  4. Each statement in the key is called a lead and is generally analytical in nature.

  5. Same taxonomic keys are required for all taxonomic categories such as family, genus and species for identification purposes.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Separate taxonomic keys are required for each taxonomic category such as family, genus and species for identification purposes. This statement is incorrect.

Multiple choice

Which of the following is true about binomial nomenclature?

  1. One scientific name first consists of a specific and then a generic epithet.

  2. Two names are there; one Latinized, the other of a person.

  3. Two names are there; one scientific, the other local.

  4. One name is given by two scientists.

  5. One scientific name first consists of a generic and then a specific epithet.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

One scientific name consists of a generic and a specific epithet. This is correct.

Multiple choice

Which of the following options is not true for binomial nomenclature?

  1. Biological names are generally in Latin and written in italics. They are Latinised or derived from Latin irrespective of their origin.

  2. This naming system given by Carolus Linnaeus is practised by biologists all over the world.

  3. First name in binomial nomenclature is genus name and the second name is species name.

  4. Both the words in a biological name, when handwritten, are separately underlined, or printed in italics to indicate their Latin origin.

  5. The first word denoting the genus starts with a small letter, while the specific epithet starts with a capital letter.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is not true. The first word denoting the genus starts with a capital letter, while the specific epithet starts with a small letter. 

Multiple choice

From the given statements, identify the incorrect one.

  1. Manuals are useful in providing information for identification of names of species found in an area.

  2. Monographs contain information on any one taxon.

  3. Herbarium is a store house of collected plant specimens that are dried, pressed and preserved on sheets.

  4. Museums have collections of preserved plant and animal specimens for study and reference.

  5. Flora provides the index to the animal species found in a particular area.
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Flora provides the index to the plant species found in a particular area. Therefore, this option is correct.

Multiple choice

Identify the correct sequence of taxonomical categories of plants.

  1. Genus - Family - Order - Division - Class

  2. Genus - Family - Class - Order - Division

  3. Genus - Division - Order - Class - Family

  4. Division - Class - Order - Family - Genus

  5. Family - Genus - Order - Class - Division
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct sequence. Correct sequence is Division - Class - Order - Family - Genus.

Multiple choice

Which of the following types of plants exhibit xeromorphy?

  1. Plants growing in glass houses

  2. Plants growing at high altitudes

  3. Submerged plants

  4. Plants growing in high marshy lands
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants growing at high altitudes exhibit xeromorphy to reduce transpiration. Xeromorphy is indepedent of availability of water in the soil. It depends mainly on low air humidity. It is characterised by thick cuticle, several layers of epidermis and a few stomata confined in the lower epidermis.

Multiple choice

Which of the following are brown algae?

  1. Gelidium and Fucus

  2. Batrachospermum and Gelidium

  3. Vaucheria and Nostoc

  4. Laminaria and Fucus

  5. Nostoc and Laminaria
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This option is correct because Laminaria is a genus of several species of brown algae, all sharing the common name kelp. Fucus is a genus of brown algae.