11. Which tissue of plant is used to transport food to various parts?
[A] Xylem
[B] Parenchyma
[C] Sclerenchyma
[D] Phloem
Show Answer
Correct Answer: D [Phloem]
Notes:
Phloem, also called bast, are tissues in plants that conduct foods made in the leaves to all other parts of the plant. This transport process is called translocation. Phloem is composed of various specialized cells called sieve tubes, companion cells, phloem fibres, and phloem parenchyma cells.
12. Red algae are known as__?
[A] Chlorophyceae
[B] Rhodophyceae
[C] Phaeophyceae
[D] None of these
Show Answer
Correct Answer: B [Rhodophyceae]
Notes:
Rhodophyceae (red algae) are a class of seaweeds, most of which are reddish in color, with a filamentous or membranous basic shape.
13. Wounds on the chorioallantoic membrane are produced by__?
[A] Herpes B virus
[B] Vaccinia virus
[C] Herpes simplex virus
[D] all of these
Show Answer
Correct Answer: D [all of these]
Notes:
Wounds on the chorioallantoic membrane are produced by Herpes B virus, Vaccinia virus and Herpes simplex virus.
14. Which of the following is analogous to mesosome of bacteria?
[A] Mitochondria of eukaryotes
[B] Golgi apparatus of eukaryotes
[C] Lysosomes of eukaryotes
[D] None of these
Show Answer
Correct Answer: A [Mitochondria of eukaryotes]
Notes:
analogous to mesosome of bacteria is Mitochondria of eukaryotes.
15. The patterns of arrangement of leaves on the stem are called__?
[A] phyllotaxy
[B] Phyllode
[C] Leaf Roots
[D] Scale Leaves
Show Answer
Correct Answer: A [phyllotaxy]
Notes:
The pattern of arrangement of leaves on the stem is called phyllotaxy.
16. An important product of the Krebs cycle is__?
[A] Water
[B] Methane
[C] ATP
[D] None of the above
Show Answer
Correct Answer: C [ATP]
Notes:
An important product of the Krebs cycle is ATP. Adenosine triphosphate (ATP) is a source of energy for use and storage at the cellular level.
17. Which of the following play a major role in defense responses to herbivores?
[A] Oligosaccharins
[B] Jasmonate
[C] Strigolactones
[D] None of these
Show Answer
Correct Answer: B [Jasmonate]
Notes:
Jasmonates play a major role in defense responses towards herbivores. They contribute to the production of volatile compounds that attract natural enemies of predators.
18. What is the function of the leaf?
[A] Helps in the introduction of florals
[B] Interested in gas-exchange
[C] Both 1 and 2
[D] Involved in seed development
Show Answer
Correct Answer: C [Both 1 and 2]
Notes:
Leaf function helps with flower initiation, is interested in gas exchange, serves as a plant food storage unit, synthesizes food through a process known as photosynthesis, excess water It plays an important role in the removal of small pores called a stomata.
19. Which of the following is not a stem modification?
[A] Corm of Colocasia
[B] Rhizome of Ginger
[C] Tuber of Potato
[D] Pitcher of Nepenthes
Show Answer
Correct Answer: D [Pitcher of Nepenthes]
Notes:
The corm of Colocasia, Rhizome of Ginger, and Tuber of Potato are stem modifications. Pitcher of Nepenthes is a leaf modification.
20. What function is performed by Organ of Jacobson in amphibians?
[A] temperature
[B] pressure
[C] smell
[D] sound
Show Answer
Correct Answer: C [smell]
Notes:
In amphibians, the Organ of Jacobson stands for the smell. Jacobson’s organ, also called the vomeronasal organ, is an organ of chemoresistance that is part of the olfactory system of amphibians, reptiles, and mammals, although it does not occur in all tetrapod groups.
