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 evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Stomata do not occur in ________.

  1. Algae

  2. Liverworts

  3. Mosses

  4. Ferns.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
To allow the plant to retain water and exchange gases, small pores (holes) in the leaves called stomata also evolved. In algae, vascular tissue is not necessary as the entire body is in contact with the water, and the water and gases simply enters the algae through diffusion.
So, the correct answer is 'Algae'
Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

The most important character which is used in classifying different algae is

  1. Cell wall structure

  2. Habit

  3. Types of pigments

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

The seven divisions of organisms that are considered within the algae are the Euglenophyta, Chrysophyta, Pyrrophyta, Chlorophyta, Rhodophyta, Paeophyta, and Xanthophyta. These divisions are separated on the basis of various features including their morphology and the biochemistry of their pigments, cell walls, and energy-storage compounds. The colors of these various algae types differ according to their particular mixtures of photosynthetic pigments, which typically include a combination of one or more chlorophylls and various accessory pigments.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Plants which are mostly found on the sides of pond is

  1. Grass

  2. Algae

  3. Wheat

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

Algae are unicellular or multicellular photosynthetic, eukaryotic organisms that can occur in salt or fresh waters, or on the surfaces of moist soil or rocks. Algae make their own energy or food from the sun but they also need water, correct temperature and nutrients to grow. Hence they usually live in water or damp environments. Algal growth is a natural occurrence in all water bodies and is the base of the aquatic food chain.

So the correct option is B.

Multiple choice evs a treat for mosquito algae: benefits and harmful effects basics of algae types of microorganisms

Identify the non embryonic plant.

  1. Spirogyra

  2. Ulva

  3. Ulothrix

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Non-embryonic plants are included under the division Thallophyta. In non-embryonic plants, the zygote or the fertilized egg does not form the embryo. It directly forms a new plant. It mainly includes algae such as Spirogyra, Ulothrix, and Ulva. Hence, all the given options are correct.

Multiple choice botany breath and blood of life stomata and transpiration transport in organisms long distance transport of water different types of circulatory systems

Leaves of submerged hydrophytes are

  1. Epistomatic

  2. Hypostomatic

  3. Astomatic

  4. Both A and B
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hydrophytes are plants growing in water. They may be submerged or floating. Floating hydrophytes have stomata on floating parts, for example, floating leaves of lotus have stomata on the upper surface. 

Submerged hydrophytes do not have stomata. Submerged hydrophytes absorb minerals and water and exchange gases through general epidermal surface.

Multiple choice botany breath and blood of life stomata and transpiration transport in organisms long distance transport of water different types of circulatory systems

Which of the following do not transpire?

  1. Algae

  2. Fungi

  3. Submerged hydrophytes

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

Submerged hydrophytes do not show transpiration, because they are submerged in water. Fungi do not come under plants. Algae do not have leaves and stomatal pores. So, they also do not show transpiration.

Multiple choice biology classification of living beings hierarchy of classification different types of classifications introduction to classification of living organisms

The two kingdom classification of Linnaeus is proved to be ineffective in the case of which of the following organism/s?

  1. Fungi

  2. Lichens

  3. Euglena

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

In the two-kingdom classification given by Linnaeus, all organisms were classified into plants and animals. This system, however, did not distinguish between eukaryotes and prokaryotes/unicellular and multicellular organisms/ photosynthetic and nonphotosynthetic organisms in which a large number of organisms did not fit. Lichens and fungi were classified under Plantae and euglena under Animalia.

So, the correct option is 'all of the above'.

Multiple choice biology classification of living beings hierarchy of classification different types of classifications introduction to classification of living organisms

Two kingdom classification was given by ________

  1. Linnaeus

  2. Mendel

  3. Whittaker

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

According to the old classification which was given by linnaeus (1707 - 1778), The entire world of living organises nearly divided into two kingdoms. Kingdom plantae (including all plants) and kingdom animalia (including all animals).

Multiple choice biology classification of living beings hierarchy of classification different types of classifications introduction to classification of living organisms

Two kingdom classification is the _______

  1. Most accepted one

  2. Oldest one

  3. Newest

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

According to the two kingdom classification which was given by Linnaeus the entire world of living organisms was divided into plantae and animalia i.e. plants and animals.

Multiple choice biology classification of living beings hierarchy of classification different types of classifications introduction to classification of living organisms

The classification system proposed by Linnaeus was a  _________ kingdom system of classification. 

  1. two

  2. three

  3. four

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

Traditionally, all the organisms of the world used to be divided into two kingdoms, i.e, Plant kingdom and animal kingdom. This system was given by Linnaeus in the book Systema Naturae. As per this system of classification, photosynthetic organisms are included into the plant kingdom and non- photosynthetic in animal kingdom.

So the correct option is "Two".