The insect that lay its eggs on the food material is
A) Wasp
B) Weaver bird
C) Ants
D) Cockroach
1 Answers
Lay out of a letter means _________
Correct option is (b) arrangement of its parts
2 Answers 1 views
Four bad eggs are mixed with 10 good ones. Three eggs are drawn one by one without replacement. Let X be the number of bad eggs drawn. Find the mean a
Correct Answer - `"Mean "=(6)/(4), "variance "=(30)/(49)`
2 Answers 2 views
Each year almost ……… wooden sleepers were needed to lay the new railway lines
Each year almost 1 core wooden sleepers were needed to lay the new railway lines
2 Answers 1 views
The Young’s modulus of a material is 10^11 Nm^-2 and its Poisson’s ratio is 0.2. The modulus of rigidity of the material is
Correct option is: (A) 0.42 × 1011 N/m2
2 Answers 1 views
‘Food stealing bird’ is ………………. A) Peacock
D) Scrubjay bird
2 Answers 2 views
With the decline in the population of fig species it was noticed that the population of wasp species also started to decline.
The relationship between the plant and pollinator is called mutualism. Fig depends on wasp for pollination, and wasp depends on fig for food and shelter With the decline in population of figs,...
2 Answers 1 views
How many days did a hen spend to hatch its eggs?
Answer is (A) 21 days
2 Answers 1 views
Assertion : All chemicals added to food items are called food preservatives. Reason : All these chemicals increase the nutritive value of the food.
(iii) Both assertion and reason are wrong statement.
2 Answers 1 views
Name the insect pest that is killed by the products of cryIAc gene. Explain how the gene makes the plant resistant to the insect pest.
a. cryIAc gene codes for a toxic insecticidal protein that controls the cotton bollworms. b. This gene codes for a toxin that becomes active when ingested by the insect. The activated...
2 Answers 1 views
In Hydra, waste material of food digestion and nitrogenous waste material are removed from
Correct Answer - C Mouth and body wall respectively
2 Answers 1 views