General Science - Online Test
Q1.
Assertion: The surgical procedure in man to block gametes transport to prevent conception is called tubectomy.
Reason: Tubectomy is cutting and tieding of fallopian tube to prevent release of ovum.
Answer : Option D
Explaination / Solution:
The surgical procedure in man to block gametes transport to prevent conception is called vescetomy as vas deference is cut and tied. Tubectomy is cutting and tieding of fallopian tube to prevent release of ovum from ovary.
Q2. The genetic and physical maps on genome was generated using information on
Answer : Option A
Explaination / Solution:
The sequence of chromosome 1 was completed only in May 2006 (this was the last of the 24 human chromosomes – 22 autosomes and X and Y – to be sequenced).
The challenging task was assigning the genetic and physical maps on the genome. This was generated using information on polymorphism of restriction endonuclease recognition sites, and some repetitive DNA sequences known as microsatellites.
Q3. Two hormones that regulate the menstrual cycle are
Answer : Option A
Explaination / Solution:
Menstrual cycle is controlled by two hormones estrogen and progesterone. Level of estrogen hormone increase sharply during ovulation and progesterone level increase during secretory phase.
Q4. Silicon is the second most abundant element on the earth’s crust and is a component of
Answer : Option A
Explaination / Solution:
Si is the most imp component of ceramics, which is comprised of metal, non-metal, or metalloids held by ionic or covalent bond.
Q5. Which of the following is a social activity
Answer : Option C
Explaination / Solution:
No Explaination.
Q6. Tendrils in plants are an example of
Answer : Option B
Explaination / Solution:
Convergent evolution is different structures evolving for the same function and hence having similarity. Analogous organs are example of convergent evolution. Tendril of plants is example of these kinds of evolution.
Q7.
Which is true about uses of contraceptive methods?
a. They are practiced against natural reproductive events.
b. They are used to prevent pregnancy or to delay or space pregnancy.
c. Uses of these methods may cause nausea, abdominal pain, irregular menstrual bleeding etc.
Answer : Option D
Explaination / Solution:
Contraceptive methods are practiced against natural reproductive events. They are generally used to prevent unwanted pregnancy or space between pregnancy. Use of contraceptive methods may cause nausea, abdominal pain, irregular menstrual bleeding etc.
Q8. Single nucleotide polymorphism (SNPs) revolutionize the process of finding chromosomal locations for
Answer : Option C
Explaination / Solution:
Scientists have identified about 1.4 million locations where single base DNA differences (SNPs) occur in human. This information is helpful in finding chromosomal locations for disease-associated sequences and human history.
Q9. The secretory phase of in the human menstrual cycle is called as
Answer : Option A
Explaination / Solution:
Menstrual cycle is divided into three phases menstruation phase, follicular phase or proliferative phase and luteal phase or secretory phase.
Q10. Carbon is most widely distributed in nature. In combined state it is available as
Answer : Option C
Explaination / Solution:
In combined state C can occur as hydrocarbons (which is a compound of carbon and hydrogen).
