1. Two examples of monoecious plants are _ and _.
Answer: (e.g., corn and cucumber)
2. The function of a stigma is _.
Answer: (to receive pollen)
3. An undifferentiated sepal and petal is known as _.
Answer: (tepals)
4. Carpel is also referred to as _.
Answer: (pistil)
5. Which floral part makes the flower conspicuous?
Answer: (petals)
6. The essential parts of a flower are _ and _.
Answer: (stamens and carpels)
7. What type of placentation is present in Carica papaya?
Answer: (parietal placentation)
8. Give two examples of plants with axile placentation.
Answer: (e.g., cotton and hibiscus)
9. What is responsible for the non-biodegradability of pollen and spores?
Answer: (the presence of sporopollenin in the outer layer)
10. An apocarpous carpel refers to _.
Answer: (a flower with separate carpels)
11. What components make up a virus?
- (a) A protein shell and nucleic acid
- (b) A protein shell and mitochondria
- (c) Nucleic acid and cell membrane
- (d) Nucleic acid, cell wall, and cell membrane
Answer: (a) A protein shell and nucleic acid
12. What is the name for the protein shell of a virus that encloses the genetic material?
- (a) Virion
- (b) Capsid
- (c) Peplomers
- (d) Capsomers
Answer: (b) Capsid
13. Which statement is true about a virion?
- (a) It’s a lytic phage
- (b) It’s a lysogenic phage
- (c) It refers to the viral capsid
- (d) It’s an infectious and fully formed viral particle
Answer: (d) It’s an infectious and fully formed viral particle
14. What forms the genome of a virus?
- (a) DNA
- (b) RNA
- (c) Either DNA or RNA
- (d) Both DNA and RNA
Answer: (c) Either DNA or RNA
15. Which is the largest known virus?
- (a) Megavirus chilensis
- (b) Arbovirus
- (c) Herpesvirus
- (d) Mumps virus
Answer: (a) Megavirus chilensis
16. Which statement is true about capsomeres?
- (a) They are individual units of the capsid
- (b) They are viral proteins for replication
- (c) They are units of nucleic acid in viruses
- (d) All of the above
Answer: (a) They are individual units of the capsid
17. Which statement is true about peplomeres?
- (a) They are individual units of capsids
- (b) They are spike-like projections on enveloped viruses
- (c) They are projections on the viral membrane
- (d) They are spike-like projections on capsids
Answer: (b) They are spike-like projections on enveloped viruses
18. An icosahedral capsid is made up of what?
- (a) Hexagonal capsomeres
- (b) Pentagonal capsomeres
- (c) Triangular capsomeres
- (d) Both a and b
Answer: (d) Both a and b
19. Which virus has complex symmetry?
- (a) T4 bacteriophage
- (b) Adenovirus
- (c) Influenza virus
- (d) All of the above
Answer: (a) T4 bacteriophage
20. Which of the following statements is true about viruses?
- (a) They are free-living
- (b) They are obligate parasites
- (c) Both (a) and (b)
- (d) None of the above
Answer: (b) They are obligate parasites
21. What is the name of the region where double-stranded single circular DNA is found in the prokaryotic cell?
- (a) Protonucleus
- (b) Nucleus
- (c) Nucleoid
- (d) Nucleoplasm
Answer: (c) Nucleoid
22. In prokaryotic cells, ribosomes are:
- (a) 70 S
- (b) 80 S
- (c) 60S + 40S
- (d) 50S + 40S
Answer: (a) 70 S
23. The two domains to which prokaryotes are classified are:
- (a) Bacteria and Protista
- (b) Bacteria and Archaea
- (c) Archaea and Eukarya
- (d) Eukarya and Monera
Answer: (b) Bacteria and Archaea
24. When a water sample from a hot thermal vent was tested, it was found to contain a single-celled organism having a cell wall lacking a nucleus. What is its classification most likely?
- (a) Eukarya
- (b) Fungi
- (c) Protista
- (d) Archaea
Answer: (d) Archaea
25. Which of these is a characteristic of prokaryotic cells?
- (a) Absence of cell organelles
- (b) Absence of nucleus
- (c) Presence of 70S ribosomes
- (d) All of these
Answer: (d) All of these
26. A difference between eukaryotic and prokaryotic cells is in having:
- (a) Ribosomes
- (b) Cell wall
- (c) Nuclear membrane
- (d) None of the above
Answer: (c) Nuclear membrane
27. In prokaryotes, the hair-like outgrowths which attach to the surface of other bacterial cells are:
- (a) Flagella
- (b) Pili
- (c) Capsule
- (d) Plasmids
Answer: (b) Pili
28. A component of prokaryotic cells:
- (a) Plasma membrane
- (b) DNA
- (c) Cytoplasm
- (d) All of these
Answer: (d) All of these
29. The process of recombination in prokaryotes takes place in this way:
- (a) Transformation
- (b) Conjugation
- (c) Transduction
- (d) All of the above
Answer: (d) All of the above
30. The flagella of a prokaryotic and eukaryotic cell vary in:
- (a) Mode of functioning and location in the cell
- (b) Types of movement and placement in the cell
- (c) Microtubular organization and function
- (d) Microtubular organization and type of movement
Answer: (c) Microtubular organization and function
31. Which of the following protects the unopened flower?
- A) Petal
- B) Stamen
- C) Anther
- D) Sepal
Answer: D) Sepal
32. An anther is a part of:
- A) Stigma
- B) Stamen
- C) Ovary
- D) Petal
Answer: B) Stamen
33. Pollen grains are collected by:
- A) Anther
- B) Petal
- C) Stigma
- D) Sepal
Answer: C) Stigma
34. Which part of the flower becomes the seed?
- A) Ovule
- B) Ovary
- C) Anther
- D) Stigma
Answer: B) Ovary
35. The style is a part of:
- A) Stamen
- B) Pistil
- C) Filament
- D) Petal
Answer: B) Pistil
36. The stalk holding the flower is known as the:
- A) Filament
- B) Stigma
- C) Carbuncle
- D) Peduncle
Answer: D) Peduncle
37. Which of the following make up the corolla as a single unit?
- A) Petals
- B) Stamens
- C) Sepals
- D) Pollens
Answer: A) Petals
38. What is the name given to flowering plants?
- A) Gymnosperms
- B) Bryophy
tes
- C) Pteridophytes
- D) Angiosperms
Answer: D) Angiosperms
39. Monocot flowers generally tend to have a number of petals that is divisible by:
- A) Three
- B) Five
- C) Seven
- D) Two
Answer: A) Three
40. Floral scent of a flower is produced in:
- A) Stigma
- B) Ovary
- C) Petals
- D) Stamen
Answer: C) Petals
41. What type of symmetry do most flowers exhibit?
- A) Bilateral
- B) Radial
- C) Asymmetrical
- D) None of the above
Answer: B) Radial
42. Which process leads to the formation of seeds in flowering plants?
- A) Photosynthesis
- B) Pollination
- C) Fertilization
- D) Germination
Answer: C) Fertilization
43. Which part of the plant is primarily responsible for photosynthesis?
- A) Roots
- B) Stem
- C) Leaves
- D) Flowers
Answer: C) Leaves
44. In which part of the plant does water absorption mainly occur?
- A) Stems
- B) Leaves
- C) Roots
- D) Flowers
Answer: C) Roots
45. Which pigment is responsible for the green color in plants?
- A) Carotene
- B) Chlorophyll
- C) Anthocyanin
- D) Xanthophyll
Answer: B) Chlorophyll
46. What is the main function of xylem in vascular plants?
- A) Transport sugars
- B) Transport water
- C) Provide structural support
- D) Store nutrients
Answer: B) Transport water
47. Which part of the plant contains the ovules?
- A) Stigma
- B) Style
- C) Ovary
- D) Anther
Answer: C) Ovary
48. Which type of plant reproduces using spores?
- A) Gymnosperms
- B) Angiosperms
- C) Ferns
- D) Mosses
Answer: C) Ferns
49. Which structure is involved in the exchange of gases in plants?
- A) Roots
- B) Stomata
- C) Xylem
- D) Phloem
Answer: B) Stomata
50. What is the primary function of the root system in plants?
- A) Photosynthesis
- B) Anchoring the plant and absorbing water and nutrients
- C) Reproduction
- D) Gas exchange
Answer: B) Anchoring the plant and absorbing water and nutrients