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. They lacks ovule
- B. They lacks ovaries
- C. The embryo is unprotected
- D. They have no seed coat
Explanation: Gymnosperms produce seeds that are not enclosed within ovaries. Instead, the ovules (structures containing female gametes or eggs) are…
Correct answer: They lacks ovaries- A. Mosses
- B. Club mosses
- C. Ferns
- D. Seed plants
- E. Horse tails
Explanation: Bryophytes are non-vascular plants classified under the division Bryophyta.
Correct answer: Mosses- A. Cassia fistula
- B. Mimosa pudica
- C. Tamarindus indica
- D. Datura alba
- E. Rosa indica
Explanation: The botanical name for tamarind, commonly known as "imli" in Hindi, is Tamarindus indica.
Correct answer: Tamarindus indica- A. Cycads
- B. Gingko
- C. Gnetum
- D. Conifers
- E. Musci
Explanation: The term "Musci" refers to the taxonomic division Musci, which includes the bryophytes commonly known as mosses.
Correct answer: Musci- A. Acacia nilotica
- B. Mimosa pudica
- C. Acacia catechu
- D. Prosopis glandulosa
- E. Albizia lebbeck
Explanation: The botanical name for the gum tree commonly known as Acacia nilotica. Acacia nilotica belongs to the genus Acacia and is a deciduous tree…
Correct answer: Acacia nilotica- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: The floral formula of family Mimosaceae is ⊕,⚥,K(5), C5 or (5), A α or 10 ,G.
Correct answer: Option D- A. Same species but different genera
- B. Same genus but different classes
- C. Same species but different classes
- D. Same genus but different species
- E. Same class but different genera
Explanation: The scientific names you mentioned indeed place both potato (Solanum tuberosum) and brinjal (Solanum melongena) in the same genus…
Correct answer: Same genus but different species- A. Gametophyte are photosynthetic and partially independent than sporophyte
- B. Sporophytes are totally dependent on gametophytes
- C. Gametophytes are totally dependent on sporophytes
- D. Both gametophytes and sporophytes are totally dependent on each other
- E. Both gametophytes and sporophytes are totally independent of each other
Explanation: The statement "Gametophytes are totally dependent on sporophytes" is generally accurate in the context of the life cycle of plants that…
Correct answer: Gametophytes are totally dependent on sporophytes- A. Sycopodium phlegmaria
- B. Anthocoris fusiform
- C. Ginkgo biloba
- D. Datura stramonium
- E. Agaricus bisporus
Explanation: The correct answer is Datura stramonium. Thorn Apple, or Datura stramonium, is a plant belonging to the Solanaceae family, characterized…
Correct answer: Datura stramonium- A. Option A
- B. Option B
- C. Option C
- D. Option D
- E. Option E
Explanation: Caesalpiniaceae is a botanical family of flowering plants. It was traditionally recognized as a distinct family, but in more recent…
Correct answer: Option C- A. Glumes
- B. Lemma and palea
- C. Lodicule
- D. Rochella
Explanation: In the family Gramineae, which is now commonly referred to as Poaceae, the reproductive structure is not a typical flower with petals…
Correct answer: Glumes- A. Pencil
- B. Typical raceme
- C. Compound umbel
- D. Capitulum
Explanation: A capitulum, also known as a head or composite flower, is a unique type of inflorescence found in plants such as sunflowers and daisies.
Correct answer: Capitulum- A. Radicle
- B. Epicotyl
- C. Hypocotyl
- D. Coleoptile
Explanation: Below the point at which the cotyledons are attached, the embryo axis in a plant is called the "hypocotyl." The hypocotyl is the region of…
Correct answer: Hypocotyl- A. Chhui mui
- B. Kikar
- C. Bauble
- D. Devi
Explanation: Prosopis glandulosa is the botanical name of Devi. The plant has been used for a variety of medicinal purposes, including lice control and…
Correct answer: Devi- A. Heterogamous condition
- B. Development of heterospory
- C. Embryo formation
- D. Protection of reproductive cells
Explanation: The development of heterospory is indeed a crucial step in the evolutionary pathway that eventually led to the development of seeds in…
Correct answer: Development of heterospory- A. Overtopping
- B. Planation
- C. Heterospory
- D. Fusion / webbing
Explanation: "Heterospory" is a term related to the reproductive structures of plants and is not directly associated with the process of leaf…
Correct answer: Heterospory- A. Mosses
- B. Ferns
- C. Gymnosperms
- D. Angiosperms
Explanation: The most successful land-adapting plants are often considered to be angiosperms, also known as flowering plants.
Correct answer: Angiosperms- A. Filicinae
- B. Angiospermae
- C. Gymnospermae
- D. All of them
Explanation: The term "Filicinae" refers to a group of plants commonly known as ferns.
Correct answer: Filicinae- A. Sclerenchyma
- B. Parenchyma
- C. Collenchyma
- D. Chlorenchyma
Explanation: During the evolution of megaphylls, the space between the overtopped dichotomous branches was occupied by a sheet of sclerenchyma…
Correct answer: Parenchyma- A. Phloem
- B. Mesophyll
- C. Xylem
- D. Petiole
Explanation: The structure of the leaf that attaches it to the stem is called the "leaf petiole." The leaf petiole serves as a connection between the…
Correct answer: Petiole