1. Which among the following kinds of roots are found in Sugarcane?
[A] Prop Roots
[B] Stilt Roots
[C] Pneumatophores
[D] Nodulose Roots
Show Answer
Correct Answer: B [Stilt Roots]
Notes:
In Maize and Sugarcane, roots arise from the first few nodes of the stem and penetrate obliquely down in to the soil and give support to the plant. They are called Stilt roots.
2. Which among the following is not a monosaccharide?
[A] Glucose
[B] Sucrose
[C] Fructose
[D] Galactose
Show Answer
Correct Answer: B [Sucrose]
Notes:
Monosaccharides are simple carbohydrates molecules that cannot be broken down into smaller molecules of other carbohydrates. Glucose and fructose are examples of Monosaccharides.
3. The pitcher plant is characterized by which of the following plants ?
[A] Autotrophes
[B] Insectivorous
[C] Allergen
[D] None of the above
Show Answer
Correct Answer: B [Insectivorous]
Notes:
The pitcher plant is characterized as insectivorous. Pitcher plants are several different carnivorous plants. They have modified leaves known as pitfall traps which is a prey-trapping mechanism featuring a deep cavity filled with digestive liquid.
4. Which among the following conditions will give birth to Fraternal Twins?
[A] a single egg is fertilized to form one zygote which then divides into two separate embryos
[B] sperm cells fertilize both the ovum and the second polar body
[C] two eggs are independently fertilized by two different sperm cells
[D] none of the above
Show Answer
Correct Answer: C [two eggs are independently fertilized by two different sperm cells]
Notes:
Fraternal twins are also called as dizygotic twins. In this type of pregnancy two eggs are independently fertilized by two different sperm cells. These types of twins may be of the same or different sexes.
5. Which among the below is not a food plant?
[A] Allium cepa
[B] Allium sativum
[C] Asparagus officinalis
[D] Atropa belladona
Show Answer
Correct Answer: D [Atropa belladona]
Notes:
Atropa belladonna, commonly known as belladonna or deadly nightshade, is a poisonous perennial herbaceous plant in the nightshade family Solanaceae. Allium cepa, Allium sativum and Asparagus officinalis are food plants.
6. Due to which of the processes in plants the Radiocarbon dating is possible to estimate their age?
[A] Growth
[B] Chemosynthesis
[C] Photosynthesis
[D] Assimilation
Show Answer
Correct Answer: C [Photosynthesis]
Notes:
Due to photosynthesis in plants the Radiocarbon dating is possible to estimate their age. Radiocarbon is a method for determining the age of an object which contains organic material by using the properties of radiocarbon, a radioactive isotope of carbon.
7. Late Hargobind Khorana had received Nobel Prize in physiology in 1968, for work on which among the following?
[A] Mechanisms of the action of hormones
[B] Chemical Structure of antibodies
[C] Interpretation of the genetic code
[D] Structural and functional organization of the cell
Show Answer
Correct Answer: C [Interpretation of the genetic code]
Notes:
Late Hargobind Khorana had received Nobel Prize in physiology in 1968, for work on interpretation of the genetic code. Har Gobind Khorana was an Indian American biochemist.
8. The bacterium ‘Escherichia coli’ is found mainly in:
[A] Human Intestine
[B] Pteridophytes
[C] Root Nodules of leguminous plants
[D] Paddy fields for nitrogen fixation
Show Answer
Correct Answer: A [Human Intestine]
Notes:
Escherichia coli, also known as E. coli, is a Gram-negative, facultative anaerobic, rod-shaped, coliform bacterium of the genus Escherichia. It is a type of bacteria that normally lives in your intestines.
9. Which of the following carries oxygen to various parts of human body?
[A] Red blood cells
[B] Nerves
[C] Plasma
[D] White blood cells
Show Answer
Correct Answer: A [Red blood cells]
Notes:
Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells also remove carbon dioxide from your body, transporting it to the lungs for you to exhale.
10. Which of the following micro-organism causes diseases like polio and chicken pox?
[A] Bacteria
[B] Protozoa
[C] Algae
[D] Virus
Show Answer
Correct Answer: D [Virus]
Notes:
Poliomyelitis or polio is an infection caused by the polio virus. It is a serious disease affecting a person’s brain and spinal cord. Chickenpox, also known as varicella, is a highly contagious disease caused by the initial infection with varicella zoster virus (VZV).
