Free Evolution MCQs with Answers
814 Evolution MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Evolution describes heritable change in populations over generations through variation, natural selection and adaptation. Lamarckism explains inheritance of acquired characteristics, while Darwinism explains selection of favourable inherited variations; these historical explanations must not be confused with the modern genetic account of evolutionary change.
Last updated
Read the Evolution notesFree MDCAT chapter notes with key terms814 questions · page 6 of 41
- A. Monocot
- B. Dicot
- C. Gymnosperms
- D. none of these
Explanation: Maize is an angiosperm with one cotyledon, parallel leaf venation, scattered vascular bundles, and floral parts commonly in multiples of…
Correct answer: Monocot- A. They have 4 or 5 sepals and petals or their multiple.
- B. They have parallel vein pattern on their leaves
- C. They are both herbaceous and woody
- D. Vascular bundles are ring shaped in their stems.
Explanation: Dicots generally have reticulate or net-like leaf venation, whereas parallel venation is a typical monocot feature.
Correct answer: They have parallel vein pattern on their leaves- A. Oospore
- B. Spore mother cell
- C. Spore
- D. Gamete
Explanation: The sporophyte begins with the diploid zygote, also called the oospore, formed by fusion of male and female gametes.
Correct answer: Oospore- A. Number of sepals and petals are 2 or multiple of 2
- B. Number of sepals and petals are 3 or multiple of 3
- C. Number of sepals and petals are 4 or multiple of 4
- D. Number of sepals and petals are 5 or multiple of 5
Explanation: Monocot flowers commonly have floral parts in threes or multiples of three, such as three or six tepals.
Correct answer: Number of sepals and petals are 3 or multiple of 3- A. Capsule
- B. Foot
- C. Stalk
- D. None of these
Explanation: In the bryophyte sporophyte, the capsule is the sporangium because it contains the spore-producing tissue and releases spores.
Correct answer: Capsule- A. Pollen grain
- B. Ovule
- C. Microgametophyte
- D. Microsporangium
Explanation: A pollen grain is the mature or developing male gametophyte of a seed plant and carries the male gametes or the cells that will produce…
Correct answer: Pollen grain- A. Mitosis
- B. Meiosis
- C. Both depending upon the conditions
- D. None of these
Explanation: The diploid megaspore mother cell in Pinus undergoes meiosis, reducing its chromosome number and producing four haploid megaspores.
Correct answer: Meiosis- A. Anthoceropsida
- B. Bryopsida
- C. Hepaticopsida
- D. None of these
Explanation: Anthoceropsida, the hornwort group, is commonly regarded in traditional bryophyte classifications as more advanced than Hepaticopsida and…
Correct answer: Anthoceropsida- A. Spheospsida
- B. Filicineae
- C. Gymnosperms
- D. Angiosperms
Explanation: Pinus, Taxus, and Picea are seed-producing plants whose ovules are not enclosed inside an ovary, a defining gymnosperm feature.
Correct answer: Gymnosperms- A. Spheospsida
- B. Filicineae
- C. Gymnosperms
- D. Angiosperms
Explanation: Gymnosperm ovules are borne exposed on the surface of megasporophylls rather than enclosed within an ovary.
Correct answer: Gymnosperms- A. Thallus like
- B. Algae like
- C. Fungus like
- D. Plant like
Explanation: A protonema is the early, green, filamentous gametophyte of a moss and resembles a simple alga in form.
Correct answer: Algae like- A. Sporangium
- B. Integuments
- C. Ovule
- D. Pericarp
Explanation: Integuments are protective coverings around the megasporangium, or nucellus, and their number can vary among plant groups.
Correct answer: Integuments113. Due to which property of Adiantum and example of Filicinae is called Maidenhairfern________________?
- A. Its short thick branched horizontally growing rhizome
- B. Fibrous adventituous roots arise from the lower side of rhizome
- C. Shows heteromorphic alternation of generation
- D. Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures
Explanation: Adiantum is called maidenhair fern because its stipe and rachis bear smooth, shiny, black hair-like structures.
Correct answer: Stipe (stalk) and rachis of leaf have black smooth and shiny hair like structures- A. They belong to sphenopsida
- B. They are seedless and their leaves are called fronds
- C. They live in shady and moist areas.
- D. They show circinate vernation.
Explanation: Filicinae are ferns, generally placed among Pteropsida or related fern groups, not Sphenopsida, which contains horsetails.
Correct answer: They belong to sphenopsida- A. Thallophytes
- B. Embryophytes
- C. Mosses
- D. Liverworts
Explanation: Liverworts are generally regarded as the simplest or most primitive major group of bryophytes, with a simple gametophyte body.
Correct answer: Liverworts- A. Overtopping
- B. Fusion
- C. Webbing
- D. Planation
Explanation: Planation is the arrangement of branches into one plane during the evolutionary development of megaphylls.
Correct answer: Planation- A. Anthoceropsida
- B. Hepaticopsida
- C. Bryopsida
- D. Lycopsida
Explanation: Mosses belong to the subdivision Bryopsida, whereas Hepaticopsida contains liverworts and Anthocerotopsida contains hornworts.
Correct answer: Bryopsida- A. Lycopods
- B. Ferns
- C. Seed plants
- D. Both b and c
Explanation: Megaphylls have a broad lamina and a branched vein system, and they occur in both ferns and seed plants.
Correct answer: Both b and c- A. Monoploid
- B. Haploid
- C. Diploid
- D. Polyploidy
Explanation: The sporophyte develops from the fusion of two haploid gametes, so it has two chromosome sets and is diploid.
Correct answer: Diploid- A. Unicellular
- B. Mulicellular
- C. Multinucleate
- D. None of these
Explanation: Immediately after fertilization, the liverwort zygote is one diploid cell inside the archegonium; it later divides to form the…
Correct answer: Unicellular