Top 30 Botany MCQs for SSB TGT Science 25 April 2024

Preparing for the SSB TGT Science exam can be a daunting task, especially when it comes to subjects like Botany. To help you ace your exam with confidence, we’ve compiled a list of the top 30 Multiple Choice Questions (MCQs) in Botany. These questions cover a wide range of topics within Botany and are designed to test your understanding of key concepts. So, let’s dive in!

Top 30 Botany MCQs for SSB TGT Science

1. How many hydrogen bonds are there between thymine and adenine?
   A. 4
   B. 3
   C. 2
   D. 7
   Answer: C
2. What are the eyes on potato tubers?
   A. Scars
   B. Sutures
   C. Rootlets
   D. Nodes with buds
   Answer: D
3. In meiosis, what is the stage where pairing of homologous chromosomes begins?
   A. Diplotene
   B. Pachytene
   C. Leptotene
   D. Zygotene
   Answer: D
4. Which of the following is fungus excluding mycelium?
   A. Saccharomyces
   B. Mucor
   C. Puccinia
   D. Rhizopus
   Answer: A
5. Where is a gene located on a chromosome?
   A. Site
   B. Locus
   C. Allele
   D. Trait
   Answer: B
6. Which organelles are involved in photorespiration?
   A. Chloroplast, peroxisome, and glyoxysomes
   B. Glyoxysomes, chloroplast, and mitochondria
   C. Chloroplast, mitochondria, and peroxisome
   D. Mitochondria, peroxisome, and glyoxysomes
   Answer: C
7. What is the ratio of F2 generation in a dihybrid cross?
   A. 1:2:1
   B. 1:1
   C. 9:3:3:1
   D. 3:1
   Answer: C
8. Where is Floridean starch found?
   A. Phaeophyceae
   B. Rhodophyceae
   C. Chlorophyceae
   D. Myxophyceae
   Answer: B
9. What is the phenomenon called when a single gene has multiple effects?
   A. Pleiotropy
   B. Genostasis
   C. Codominance
   D. Epistasis
   Answer: A
10. What is the hormone that reduces transpiration rate by inducing stomatal closure?
    A. Cytokipin
    B. Auxin
    C. ABA
    D. Ethylene
    Answer: C
11. When was Lamarck’s theory of evolution published?
    A. 1806
    B. 1802
    C. 1812
    D. 1809
    Answer: D
12. What is the female sex organ in bryophytes known as?
    A. Antheridium
    B. Archegonium
    C. Ascogonium
    D. Carpogonium
    Answer: B
13. What is the equivalent ATP yield from NADH produced in the Krebs cycle?
    A. 7 ATP
    B. 5 ATP
    C. 3 ATP
    D. 9 ATP
    Answer: C
14. What constitutes a nucleoside?
    A. Pyrimidine + purine + phosphate
    B. Purine + sugar + phosphate
    C. Purine/pyrimidine + phosphate
    D. Purine/pyrimidine + sugar
    Answer: D
15. What serves as the final electron acceptor in mitochondrial electron transport chains?
    A. NAD+
    B. FAD
    C. H2O
    D. None of these
    Answer: C
16. Which plant includes feather stigma?
    A. Wheat
    B. Poppy
    C. Pea
    D. Hibiscus
    Answer: A
17. How does water move from cell to cell through plasmodesmata?
    A. Facilitated
    B. Apoplastic
    C. Transmembrane
    D. Symplastic
    Answer: B
18. What is the process of water exudation through hydathodes called?
    A. Evaporation
    B. Bleeding
    C. Guttation
    D. Transpiration
    Answer: C
19. What is the CO2 fixation mechanism in maize plants known as?
    A. CAM pathway
    B. C3 – C4 intermediate
    C. C3 pathway
    D. C4 pathway
    Answer: D
20. In which plant family is basal placentation found?
    A. Fabaceae
    B. Asteraceae
    C. Malvaceae
    D. Solanaceae
    Answer: B
21. What are salt-loving plants called?
    A. Xerophytes
    B. Mesophytes
    C. Glycophytes
    D. Halophytes
    Answer: D
22. Where do insectivorous plants typically grow?
    A. Carbohydrate-rich soil
    B. Potassium-deficient soil
    C. Nitrogen-deficient soil
    D. Nitrogen-rich soil
    Answer: C
23. What is the method of water exudation through hydathodes called?
    A. Guttation
    B. Transpiration
    C. Evaporation
    D. Bleeding
    Answer: A
24. Basal placentation is found in which family?
    A. Malvaceae
    B. Solanaceae
    C. Fabaceae
    D. Asteraceae
    Answer: D
25. Insectivorous plants grow best in which type of soil?
    A. Nitrogen-rich soil
    B. Nitrogen-deficient soil
    C. Potassium-deficient soil
    D. Carbohydrate-rich soil
    Answer: B
26. In a pond ecosystem, what does “benthos” refer to?
    A. Zooplanktons on water surface
    B. Large fishes eating small ones
    C. Primary consumers at the bottom of a pond
    D. All phytoplankton
    Answer: C
27. What do eyes on potato tubers signify?
    A. Rootlets
    B. Nodes with buds
    C. Scars
    D. Sutures
    Answer: B
28. What is a fungus without mycelium known as?
    A. Puccinia
    B. Rhizopus
    C. Saccharomyces
    D. Mucor
    Answer: C
29. In photorespiration, which organelles are involved?
    A. Glyoxysomes, chloroplast, and mitochondria
    B. Chloroplast, peroxisome, and glythisome
    C. Mitochondria, peroxisome, and glyoxysomes
    D. Chloroplast, mitochondria, and peroxisome
    Answer: D
30. X174 has what type of DNA?
    A. Single-stranded DNA
    B. Single-stranded RNA
    C. Double-stranded RNA
    D. Double-stranded DNA
    Answer: A