Free Biodiversity and Variety of Life MCQs with Answers
3,130 Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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- A. Psilopsida
- B. Sphenopsida
- C. Lycopsida
- D. Pleropsida
Explanation: The correct answer is Lycopsida. Club-mosses belong to the class Lycopsida, which is a group of vascular plants that have microphylls and…
Correct answer: Lycopsida- A. panicle
- B. multiparous cyme
- C. capitulum
- D. umbel
Explanation: A panicle is a branched inflorescence in which each branch has more than one flower.
Correct answer: panicle- A. Adlantum
- B. Pinus
- C. Marchantia
- D. Mustard-plant
Explanation: Bryophytes (mosses, liverworts and hornworts) have dominant gametophyte phase on which the adult sporophyte is depended for nutrition.
Correct answer: Marchantia- A. Embryo-Sac
- B. Embryo
- C. Seed
- D. Male gametophyte
Explanation: The functional megaspore grows into an Embryo sac in angiosperms.
Correct answer: Embryo-Sac- A. Lathyrus odoratus
- B. Solanum nigrum
- C. Zea mays
- D. Avena sativa
Explanation: Zea-Mays (corn) are a monoecious plant, a hermaphrodite, where both the male and female reproductive parts are present in the same plant.
Correct answer: Zea mays- A. Zygote
- B. Sporophyte
- C. Gametophyte
- D. Prothalus
Explanation: Released spores grow into a gametophyte which is a very small heart shaped structure.
Correct answer: Gametophyte- A. Club Mosses
- B. Funaria
- C. Liver-Worts
- D. Horn-Worts
Explanation: In Club mosses also called lycopsids, the gametophyte is mainly underground.
Correct answer: Club Mosses- A. Ulva
- B. Funaria
- C. Marchantia
- D. Polytrichum
Explanation: Funaria (cord moss) is a bryophyte. Funaria is monoecious and autoecious i.e., male and female reproductive structures develop on…
Correct answer: Funaria- A. Clmerous
- B. Trimerous
- C. Tetramerous
- D. Pentamerous
Explanation: Flowering plants are divided into two broad groups by botanists: monocots and dicots.
Correct answer: Pentamerous- A. Adiantum
- B. Funaria
- C. Marchantia
- D. Angiosperms
Explanation: Angiosperms, also called flowering plants, are about 300,000 species of flowering plants, the largest and most diverse group within the…
Correct answer: Angiosperms3071. Heterospory occur in:
- A. Selaginella
- B. Equisetum
- C. Lycopodium
- D. Lepidodendron
Explanation: The phenomenon of the development of two types of spores (differing in size, structure, and function) by the same species is known as…
Correct answer: Selaginella- A. Vessels
- B. Companion cells
- C. Sieve tubes
- D. Both (a) and (b)
Explanation: The correct answer is both (a) and (b). Angiosperms have unique vascular tissues, such as vessels and companion cells, which are not found…
Correct answer: Both (a) and (b)- A. Sunflower
- B. Wheat
- C. Mulberry
- D. Maize
Explanation: Dioecious plants, such as Mulberry, have separate male and female individuals, meaning individual plants are either male or female, not…
Correct answer: Mulberry- A. Uniparous cyme
- B. Biparous cyme
- C. Multiparous cyme
- D. Cymose capitulum
Explanation: The correct answer is multiparous cyme. In this type, the main axis culminates in a flower and branches into three or more daughter axes…
Correct answer: Multiparous cyme- A. Fruit
- B. Seed
- C. Endosperm
- D. Perisperm
Explanation: The ripened and fertilized ovule is called a seed. Seeds are crucial for plant reproduction and consist of three main components: the…
Correct answer: Seed- A. Liverworts
- B. Mosses
- C. Psilopsida
- D. Onion
Explanation: The correct answer is Liverworts. Liverworts are the simplest form of non-vascular plants and lack true roots, stems, or leaves.
Correct answer: Liverworts- A. Atropa belladonna
- B. Taxus baccata
- C. Narcissus spp.
- D. Both (a) & (b)
Explanation: The correct answer is Atropa belladonna, which is the scientific name for deadly nightshade.
Correct answer: Atropa belladonna- A. Mycelium
- B. Hyphae
- C. Protonema
- D. Bud
Explanation: Mycelium is part of the fungi kingdom and is the network of threads, called hyphae and a bud is an undeveloped or embryonic shoot so…
Correct answer: Protonema- A. Club moss
- B. Horsetail
- C. Sphagnum moss
- D. Fern
Explanation: Sphagnum moss because it can be used as carbon or coal for heating
Correct answer: Sphagnum moss- A. Pinus
- B. Ferns
- C. Marchantia
- D. Maize
Explanation: Double fertilization of this type is unique to flowering plants (angiosperms) so the correct option is B i.e ferns
Correct answer: Ferns