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

Which of the following divisions comprises the tallest and most massive living organisms?

  1. Cycadophyta

  2. Pinophyta

  3. Ginkgophyta

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

Pinophytes, also called conifers, are also the tallest and most massive living organisms; coast redwoods (Sequoia sempervirens) can exceed 100 metres (328 feet) in height and the giant sequoia (Sequoiadendron giganteum) can have a girth of 31 metres (101.5 feet) in circumference.

Multiple choice

Which of the following groups of algal are called cyanobacteria?

  1. Red algae

  2. Brown algae

  3. Blue - green algae

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

Blue-green algae are called cyanobacteria because they are photosynthetic bacteria containing blue-green pigments. Red algae have phycoerythrin, brown algae have fucoxanthin, and green algae have chlorophyll like plants.

Multiple choice

Classification of algae into 11 classes was made by Fritsch on the basis of flagellation, pigmentation and type of reserve food. Which of the following is the main criteria used in algal classification/ grouping of algae?

  1. Chemical composition of cell wall

  2. Type of pigmentation of cell wall

  3. Nature of food storage

  4. Shape and colony formation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Type of pigmentation of cell wall is the main criterion on the basis of which different forms of algae have been classified like red, green and brown algae.

Multiple choice

Which of the following algae shows best origin and evolution of sex?

  1. Brown algae

  2. Red algae

  3. Green algae

  4. Blue green algae
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The green algae (singular: green alga) are the large group of algae from which the higher plants emerged. Green algae are eukaryotic organisms that follow a reproduction cycle called alternation of generations.

Multiple choice

Which of the following statements is/are false?

a. A cell is a group of tissues having a common origin and generally performing a common function. b. Within angiosperms, the monocots and dicots are seen to be anatomically different. c. During the formation of the primary plant body, specific regions of the apical meristem produce dermal tissues, ground tissues and vascular tissues.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

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

This is the correct option as this statement is false. A tissue is a group of cells having a common origin and generally performing a common function.

Multiple choice

What determines the shape of lichens?

  1. Type of Phycobionts

  2. Type of Cyanobionts

  3. Type of Mycobionts

  4. Organisation of fungal filaments
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The shape of a lichen is usually determined by the organisation of the fungal filaments.

Multiple choice

Which of the following statements is/are false?

a. Linnaeus used simple morphological characters to classify plants into trees, shrubs and herbs. b. The two kingdom system of classification did not distinguish between the eukaryotes and prokaryotes, and unicellular and multicellular organisms. c. The five kingdom classification was proposed by R. H. Whittaker in 1969.

  1. Only a

  2. Only a and b

  3. Only b

  4. Only b and c

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

Aristotle used simple morphological characters to classify plants into trees, shrubs and herbs.