MCQ Bank
Eggs hatch and first instar larvae emerge, they infest the host plant by a process called…………..
- A) incrustation
- B) swarming
- C) inoculation
- D) encrustation
The............... is killed in the cocoon by steam or hot air at the chrysalis stage.
- A) adult
- B) pupa
- C) larva
- D) egg
Due to insulating property of................ it used for encasing cable wires.
- A) resin
- B) silk
- C) lac
- D) wax
…………………………. is the common name of Zizyphus jujuba.
- A) Kusum
- B) Ber (plum)
- C) Babul
- D) Palas
…………………………. is the common name of Acacia arabica.
- A) Palas
- B) Babul
- C) Kusum
- D) Ber (plum)
…………….is a continuous filament within each cocoon.
- A) thread
- B) silk
- C)
- D)
India and .......................are the major producers of Lac.
- A) China
- B) Srilanka
- C) Bangladesh
- D) Thailand
As compared to insects mites have ..............legs to walk.
- A) six
- B) seven
- C) five
- D) eight
………….cluster on the tips of the shoots, sucking the sap from the plant, which reduces plant vigour.
- A) cutworms
- B) aphids
- C) thrips
- D) caterpillars
Depending on the host plant, lac is of …………….types.
- A) four
- B) three
- C) two
- D) five
After............................... weeks, the eggs are hatched into first instar larvae of Lac Insect.
- A) 8
- B) 2
- C) 6
- D) 4
The silkworm caterpillar builds its ............. by producing and surrounding itself with a long, continuous fiber, or filament.
- A) cocoon
- B) fibroin
- C) case
- D) encrustation
The ...................serves as the floor of the colony and as a takeoff and landing platform for foraging bees.
- A) hive stand
- B) stand
- C) bottom board
- D) hive bodies
The life cycle of lac insects of …………. months and hence two crops in a year are regular.
- A) 7
- B) 6
- C) 5
- D) 4
Some beekeepers prefer …………frame hive bodies.
- A) six
- B) eight
- C) seven
- D) five
Lac is a mixture of several substances, but ……………is the main constituent.
- A) Resin
- B) Dye
- C) Water
- D) Wax
.............is used for making toys, bracelets or bangles, for filling the ornament, sealing wax, gramophone records etc
- A) wax
- B) resin
- C) Lac
- D) silk
......................can also spread viruses which can severely reduce yields and quality.
- A) Cutworms
- B) Locusts
- C) Caterpillars
- D) Aphids
A…………. is an even mixture of very small solid particles throughout a liquid.
- A) emulsions
- B) solutions
- C) pesticide
- D) suspension
Production of ........................ trees that provide leaves upon which the silkworms feed.
- A) babul
- B) apple
- C) palas
- D) mulberry