All Free Biology MCQs with Answers

• A. Zygomycota
• B. Ascomycota
• C. Basidiomycota
• D. Deutromycota

Explanation: Yeasts are unicellular fungi that reproduce asexually by budding. They are commonly classified within the phylum Ascomycota.

• A. Monera
• B. Protista
• C. Plantae
• D. Fungi

Explanation: In the kingdom Fungi, nuclear mitosis is a distinctive feature. Unlike other kingdoms, the mitotic spindle forms inside the nuclear…

• A. zygomycota
• B. ascomycota
• C. basidiomycota
• D. deuteromycota

Explanation: Rust and smut diseases are caused by fungi that belong to the phylum Basidiomycota.

• A. Athlete's foot
• B. Ringworm
• C. Dandruff
• D. None of these

Explanation: Microsporum furfur is a fungus that can cause ringworm, a type of dermatophyte infection.

• A. Zygomycota
• B. Ascomycota
• C. Basidiomycota
• D. Deuteromycota

Explanation: Sea fungi are related to Basidiomycota.Basidiomycota is a phylum of fungi that includes many well-known groups, such as mushrooms…

• A. Rhizopus
• B. Penicillium
• C. Mucor
• D. Yeast

Explanation: Black bread mold is Rhizopus.Rhizopus is a common genus of fungi that includes species responsible for causing the black bread mold.

• A. 2-Ascospores
• B. 4-Ascospores
• C. 6-Ascospores
• D. 8-Ascospores

Explanation: Typically, a single ascus will contain eight ascospores which are produced by meiosis followed by a mitotic division.

• A. Club-mosses
• B. Club-fungi
• C. Sac-fungi
• D. Bread mold

Explanation: Basidiomycota is a large and diverse phylum of fungi that includes jelly and shelf fungi; mushrooms, puffballs, and stinkhorns; certain…

• A. Secondary mycelium
• B. Primary mycellum
• C. Tertiary mycelium
• D. Pathogenic parasites

Explanation: Basidiocarp, in fungi, is a large sporophore, or fruiting body, in which sexually produced spores are formed on the surface of club-shaped…

• A. Primary mycelium
• B. Secondary mycelium
• C. Tertiary mycelium
• D. Quaternary mycelium

Explanation: The correct answer is secondary mycelium. This stage occurs after the primary mycelium has established itself and involves the fusion of…

• A. 50%
• B. 40%
• C. 20%
• D. 30%

Explanation: Ascomycota, also known as sac fungi, are known for their ability to form symbiotic associations, particularly in the form of lichens.

• A. They are most important source of antibiotics
• B. They have no known sexual stage.
• C. Hyphae fuse to give rise to dikaryotic mycelium
• D. The vast majority of spores are formed asexually

Explanation: Basidiomycota are fungi composed of hyphae, which gives rise to dikaryotic mycelium

• A. Grapes
• B. Mango
• C. Oats
• D. Willow

Explanation: In inflorescence: Indeterminate inflorescence. A panicle is a branched raceme in which each branch has more than one flower, as in the…

• A. Nostoc
• B. Volvox
• C. Spirogyra
• D. Ulva

Explanation: Ulva: This is a small genus of marine and brackish water green algae. It is edible and is often called 'Sea Lettuce'.

• A. Cactus
• B. Amaryllis
• C. Spurge
• D. Firs

Explanation: Answer; A (It should be D instead. Although for A both angiosperm and gymnosperm is coming on different websites, since D is certainly…

• A. glumes
• B. lemma & palea
• C. lodicules
• D. rochilla

Explanation: In the family Gramineae (Poaceae), the flower structure includes unique components like lodicules, which are small scales located below…

• A. Achieving haploidy
• B. Promoting survival
• C. Producing diploidy
• D. Having no significance

Explanation: The concept of alternation of generations in plants involves a life cycle that alternates between a diploid sporophyte stage and a haploid…

• A. Capsicum annuum
• B. Solanum tuberosum
• C. Medicago denticulata
• D. Bauhinia variegata

Explanation: The correct answer is Capsicum annuum. It is classified as a fruit because it develops from the ovary of a flower and contains seeds.

• A. Tracheophyta
• B. Bryophyte
• C. Thallophyta
• D. Embryophyta

Explanation: Class filicinae comes under vascular plants or tracheophyta.

• A. Dry
• B. Wet
• C. Warm
• D. Covered

Explanation: Bryophytes have wet sterile hairs in between the sex organs to keep them protected from drying condition and for protection of…