Home
Class 12
BIOLOGY
The silkworm larva ceases to eat and sta...

The silkworm larva ceases to eat and starts spinning silk around its body

A

At random

B

From inside to outside

C

From outside to inside

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
C
Mature caterpillar stops feeding and returns to a corner of mulberry leaves. Its salic glands now secrete a sticky fluid. This sticky substance turns into a solid silk thread in contact with air. It spins silk from outside to inside
Promotional Banner

Similar Questions

Explore conceptually related problems

Steps for the production of silk are given below in a jumbled order. Arrange them in their proper sequence. (a) Eggs are warmed to a suitable temperature for the larvae to hatch from eggs. (b) Fibers are taken out from the cocoon. (c ) After 25 to 30 days, the caterpillars stop eating and start spinning cocoons. (d) The larvae "/" caterpillars or silkworms are kept in clean trays along with freshly chopped mulberry leaves. (e ) Female silk moths lay eggs. (f) Cocoons are kept under the sun or boiled in water.

What is angular velocity of earth spinning around its own axis ?

A satellite going around the earth suddenly loses height and starts moving in an orbit of smaller radius. Then its periodic time

A force F=ahati+bhatj+chatk is acted upon a body of mass m . If the body starts from rest and was at athe origin initially, find its new coordinate after time t .

Starting from rest a wheel rotates with uniform angular acceleration 2 pi rad s^(-2) . After 4s ,if the angular acceleration ceases to act,its angular displacement in the next 4s is?

Starting from rest a wheel rotates with uniform angular acceleration 2 pi rad s^(-2) .After 4s ,if the angular acceleration ceases to act,its angular displacement in the next 4s is?

In this section you have few short passages. After each passage, you will find some items based on the passage. To eat and not be eaten - that's the imperative of a caterpillar's existence. The leaf roller reduces its risks of being picked off by predators by silking together a temporary shelter in which to feed and rest. Adopting a different line of defense, the jelly slug extrudes a sticky translucent coating that may foul the mouth-parts of marauding ants. For its part, the aquatic larva, by its watery element, fashions a portable hideout from fragments of aquatic leaves. Cutting a serpentine trail as it feeds on tender young leaves, the minute citrus leaf miner spends its entire larval life inside its host plant, thus keeping its appetizing body safely under wraps. Which one of the following pairs of words in the passage describes enemies of the caterpillar ?

A double star is a system of two starts moving around the centre of inertia of the system due to gravitation. Find the distance between the components of the double star, if its total mass equals M and the period of revolution T.

Assertion : In the s-t diagram as shown in figure, the body starts moving in positive direction but not form s = 0. Reason : At t = t_(0) , velocity of body changes its direction of motion.