Q:
The larvae of cockroach is called

a
Caterpillar
b
Maggot
c
Nymph
d
Grub
Answer : Option C
Explanation :
Nymph.Cockroaches develop through a process called gradual metamorphosis. This process has three stages: egg, nymph, & adult.

Related Questions

1.
What apparatus is used to locate a submerged object -

a
Pulsar
b
Sonar
c
Quasar
d
Radar
Answer and Explanation
Answer : Option B
Explanation :
Sonar.Sonar (originally an acronym for Sound Navigation & Ranging) is a technique that uses sound propagation (usually underwater, as in submarine navigation) to navigate, communicate with or detect objects on or under the surface of the water, such as other vessels. Sonar may be used as a means of acoustic location & of measurement of the echo characteristics of 'targets' in the water. Two types and categories of technology share the name 'sonar': passive sonar is essentially listening for the sound made by vessels; active sonar is emitting pulses of sounds & listening for echoes.
2.
Labourers Who among the following do hard manual labour develop thick skin on their palms & soles due to:

a
thick epidermis
b
thick dermis
c
All of these
d
thick subcutaneous tissue
Answer and Explanation
Answer : Option C
Explanation :
If we look at the dermis, the layer on the skin beneath the epidermis (outer layer), & a certain type of cell within this layer, called a fibroblast, we find that the fibroblasts in the soles & palms secrete higher levels of a protein known as dickkopf 1, or DKK1, than the fibroblasts in thedermis at other body sites. It is believed that the rich source of DKK1 in these areas affects the epidermal layer above it & creates the physical characteristics of thickened, paler skin. DKK1 thickens the epidermis by increasing the number of skin cells & their density. Three genes affected by DKK1 – keratin 9, áKLEIP & â-catenin – have been found to cause this thickening. Keratin 9 reinforces the skin against physical impact, áKLEIP aids in cell division (multiplying) & makes cells smaller and, finally, a reduction in â-catenin is also possibly involved in cell contraction (making the cells more compact).
3.
The vitamin that is most readily manufactured in our bodies is

a
vitamin C
b
vitamin A
c
vitamin D
d
vitamin B
Answer and Explanation
Answer : Option C
Explanation :
radiation, especially during the early morning hours.
4.
Approximate life span of parrot is

a
40 yrs
b
140 yrs
c
20 yrs
d
70 yrs
Answer and Explanation
Answer : Option C
Explanation :
20 yrs.The lifespan of a parrot depends on the species. Smaller types and categories of parrots generally have a lifespan of 15 to 20 yrs, while some larger varieties can live as long as 80 yrs.
5.
At boiling point of liquids, its

a
Atmospheric pressure increases
b
Temperature remains constant
c
Temperature increases
d
Vapour pressure decreases
Answer and Explanation
Answer : Option B
Explanation :
Temperature remains constant.An interesting property of matter is that its temperature remains constant during a phase change, assuming its surrounding pressure is constant. For example, when water is converted into vapors (gaseous state) at 100°C & so 100°C is its boiling point. A liquid changes into gaseous state at a constant temperature called its boiling point. The temperature remains constant at 100°C. The temperature of water increases only after all the water is evaporated. Likewise, once the temperature of a liquid is lowered to its freezing point, the temperature does not decrease until all the liquid has changed its phase to become a solid.

More Questions

1.
Who produced the first film in India 'Raja Harishchandra' in 1913?

2.
Which of these is a 'Morning Raga'?

3.
From the evolutionary point of view, which is closer to man?

4.
Among the Indian languages, which one is spoken maximum in the world after Hindi?

5.
The Karakoram Highway connects which pair of countries?

6.
Which country is the leading producer of uranium?

7.
What is distance between the Earth and the Sun (in million kms.)?

8.
Upanishads, also known as the Vedantas, are How many are these upanishads?

9.
Sushil Kumar is known for his outstanding performance in which field?

10.
What is treatment of body defects through massage and exercise?