11. Oyster mushroom is an example of predator fungi that attacks__?
[A] Tapeworms
[B] Pinworms
[C] Platyhelminthes
[D] Roundworms
Show Answer
Correct Answer: D [Roundworms]
Notes:
The oyster mushroom is an example of a predatory fungus that attacks roundworms.
12. Where is the phloem located?
[A] outer side of the vascular bundle.
[B] centre of the vascular bundle
[C] marginal regions of leaves and stems
[D] None of these
Show Answer
Correct Answer: A [outer side of the vascular bundle.]
Notes:
The xylem is located towards the adaxial surface of the leaf, whereas the phloem is located towards the axial surface of the leaf.
13. Where are the protons stored in the mitochondria?
[A] inner membrane
[B] intermembrane space
[C] outer membrane
[D] none of these
Show Answer
Correct Answer: B [intermembrane space]
Notes:
In the mitochondria, the hydrogen ions, these protons, are concentrated in the intermembrane space due to the electron transport chain.
14. Which of the following is not a macronutrient?
[A] nitrogen
[B] phosphorus
[C] magnesium
[D] chlorine
Show Answer
Correct Answer: D [chlorine]
Notes:
Macronutrients are nitrogen, phosphorus, potassium, calcium, magnesium, and sulfur. The micronutrients are boron, chlorine, copper, iron, manganese, molybdenum, and zinc.
15. Which of the following stimulates by gibberellin hormone?
[A] shoot elongation
[B] seed germination
[C] fruit and flower maturation
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
Gibberellins hormones stimulate shoot elongation, seed germination, and fruit and flower maturation.
16. The process of development of fruit without any prior fertilization is called__.
[A] Asexual reproduction
[B] Parthenocarpy
[C] Apomixis
[D] Sexual reproduction
Show Answer
Correct Answer: B [Parthenocarpy]
Notes:
The process of development of fruit without any prior fertilization is called Parthenocarpy. Pineapple, banana, cucumber, grape, watermelon, orange, grapefruit, pear, fig are some examples of Parthenocarpy.
17. What is known as the exclusion of plant diseases by legislation?
[A] Disease resistance
[B] Plant quarantine
[C] Biological control of plant
[D] Cultural control
Show Answer
Correct Answer: B [Plant quarantine]
Notes:
Plant quarantine is defined as the legal enforcement of those measures. These are intended to prevent the spread of pests or to prevent further spread if they have already gained entry and are established in newly restricted areas.
18. Where was the first reported rusting of coffee in 1868?
[A] Brazil
[B] Ceylon
[C] India
[D] Indonesia
Show Answer
Correct Answer: B [Ceylon]
Notes:
Rusting of coffee was first reported in Sri Lanka (then Ceylon) in 1868. Coffee leaf rust is caused by the fungus Hemileia vastatrix.
19. The long hollow bones and connected air sacs are the characteristic features of?
[A] Mammals
[B] Reptilia
[C] Aves
[D] None of the above
Show Answer
Correct Answer: C [Aves]
Notes:
The long hollow bones and connected air sacs are the characteristic features of Aves. Aves are warm-blooded animals and have four-chambered hearts.
20. Which of the following is the largest group of mammals?
[A] Rodentia
[B] Chiroptera
[C] Carnivora
[D] Insectivora
Show Answer
Correct Answer: A [Rodentia]
Notes:
Rodentia is the largest group of mammals. Rodents are mammals of the rodent order. It is characterized by a pair of continuously moving incisors in each of the upper and lower jaws.
