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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1941. A drupe develops in
- A. Mango
- B. Wheat
- C. Pea
- D. Tomato
Explanation: (a): Drupe is a fleshy fruit that develops from either one or several fused carpels and contains one or many seeds.
Correct answer: Mango1942. Dry indehiscent singleseeded fruit formed from the bi-carpellary syncarpous inferior ovary is
- A. Berry
- B. Cremocarp
- C. Caryopsis
- D. Cypsela
Explanation: (d): Cypsella is a dry, one-chambered, one-seeded fruit developing from an inferior, bicarpellary ovary, e.g., sunflower, marigold…
Correct answer: Cypsela- A. Liliaceae
- B. Asteraceae
- C. Brassicaceae
- D. Solanaceae
Explanation: (d) : A pentamerous actinomorphic flower is one where the floral parts are in multiples of five and the flower can be divided into two…
Correct answer: Solanaceae- A. Mesocarp
- B. Endocarp
- C. Pericarp
- D. Juicy aril
Explanation: (d): In litchi, aril forms the edible part in fruit. It is a collar like out growth from the base of the ovule forming a kind of third…
Correct answer: Juicy aril1945. Edible part in mango is
- A. Mesocarp
- B. Epicarp
- C. Endocarp
- D. Epidermis
Explanation: (a): Mango (Mangif era indica) of Family Anacardiaceae is a drupe. The edible part in mango is mesocarp.
Correct answer: Mesocarp- A. Mustard
- B. Banana
- C. Pisum
- D. Brinjal
Explanation: (d): Brinjal or Solanum melongena belongs to family solanaceae. The fruits are rich in iodine. They are used in the form of vegetable.
Correct answer: Brinjal- A. Nerium
- B. Hydrilla
- C. Mango
- D. Guava
Explanation: (a): Usually the stomata are placed at the same level as the adjoining epidermal cells (e.g., Helianthus, Mangifera).
Correct answer: Nerium- A. Axillary bud
- B. Accessory bud
- C. Adventitious bud
- D. Apical bud
Explanation: (a): A tuber is the swollen tip of the underground branch. Tubers are round or oval in shape.
Correct answer: Axillary bud1949. Edible part of banana is
- A. Epicarp
- B. Mesocarp and less developed endocarp
- C. Endocarp and less developed mesocarp
- D. Epicarp and mesocarp
Explanation: (c ): Banana is a berry. It develops from monocarpellary or multi carpellary syncarpous ovary.
Correct answer: Endocarp and less developed mesocarp- A. Brassicaceae-sunflower
- B. Malvaceae-cotton
- C. Papilionaceae-catechu
- D. Liliaceae-wheat
Explanation: (b): Malvaceae is also known as cotton family or mallow family. The plants of this family are cosmopolitan in distribution, although more…
Correct answer: Malvaceae-cotton- A. Style
- B. Stigma
- C. Spathe
- D. Filaments
Explanation: (a): In maize style, it is very long. It comes out of the cob to expose stigma for wind pollination. These are collectively known as silk.
Correct answer: Style- A. Total root parasite
- B. Partial root parasite
- C. Total stem parasite
- D. Partial stem parasite
Explanation: Rafflesia is a specialized total root parasite as the vegetative parts of its body are reduced the whole body is within the host root and…
Correct answer: Total root parasite- A. Fruit
- B. Inflorescence
- C. Thalamus
- D. Ovary
Explanation: (b): Inflorescence is the cluster of flowers or arrangement of flowers on the floral axis.
Correct answer: Inflorescence- A. Berry
- B. Drupe
- C. Capsule
- D. Siliqua
Explanation: (b): Cypsella is a dry, one chambered, one seeded fruit developing from an inferior, bicarpellary ovary, e.g., sunflower, marigold…
Correct answer: Drupe1955. Tegmen develops from
- A. Funiculus
- B. Chalaza
- C. Inner integument
- D. Outer integument
Explanation: (c: The outer protective covering of the seed is called seed coat which develops from integuments of ovules.
Correct answer: Inner integument- A. Embryo
- B. Cotyledons
- C. Endosperm
- D. Underground tubers
Explanation: (b): In groundnut the food/oil reserve is present in cotyledons. It is a very important commercial crop of Leguminosae.
Correct answer: Cotyledons1957. Fruit of groundnut is
- A. legume
- B. Caryopsis
- C. Berry
- D. Nut
Explanation: (a): Fruit of groundnutis legume. It is developed from monocarpellary ovary but dehisces by both sutures from apex downward.
Correct answer: legume- A. Dermatogen
- B. Phellogen
- C. Xylem
- D. Vascular cambium
Explanation: (b): Cork cambium or phellogen is a type of cambium arising within the outer layer of the stems of woody plants, usually as a complete…
Correct answer: Phellogen- A. Closed and scattered
- B. Open and in a ring
- C. Closed and radial
- D. Open and scattered
Explanation: Barley is a monocotyledonous plant. The vascular bundle of stem is conjoint,collateral,exarch and closed (because cambium is absent).
Correct answer: Closed and scattered- A. Proteins
- B. Starch
- C. Lipids
- D. Auxins
Explanation: In monocotyledons the seeds are generally endospermous. The internal structure of grain can be studied in a longitudinal section.
Correct answer: Proteins