What is the recommended sample size for T-test?

• A) 50 or more than 50
• B) 100 or more than 100
• C) 20 or less
• D) 30 or less than 30

Spiders have………………… body segments

• A) 1
• B) 3
• C) 2
• D) 4

Epigyne or epigynum is the external genital structure of ………..spiders

• A) Immature
• B) female
• C) Male and female both
• D) male

What is the requirement for the T-test regarding the distribution of data?

• A) Data should be positively skewed
• B) Data should be perfectly symmetrical
• C) Data should be normally distributed
• D) Data should be negatively skewed

Most spiders have………….. eyes.

• A) 8
• B) 6
• C) 5
• D) 7

Which is a crucial assumption for the T-test regarding variances?

• A) Variance can be different between samples
• B) Variances should be perfectly equal within the limits of sampling error
• C) Variance should be perfectly equal between samples
• D) Variance do not matter in T-test

Spider ………. of many species die after producing the last egg sac.

• A) Male and female both
• B) Male
• C) Immature
• D) Female

How should samples be chosen for a T-test?

• A) Conveniently from the population
• B) Randomly from the population
• C) Purposefully from the population
• D) Systematically from the population

Largest family of spiders.

• A) Thomisidae
• B) Araneidae
• C) Oxyopidae
• D) Salticidae

What does a T-test determine?

• A) Whether the samples are correlated
• B) The median of two samples
• C) The standard deviation of two samples
• D) Whether the means of two samples are statistically different

In spiders …………….. body part is abdomen.

• A) 1st
• B) 4rth
• C) 2nd
• D) 3rd

Silk gland parts in spiders and uses…………..

• A) All of these
• B) For capturing prey
• C) Travelling
• D) For food storage

Which type of T-test is used when comparing two independent samples?

• A) Two-sample T-test
• B) Paired T-test
• C) One-sample T-test
• D) Matched T-test

In two-way ANOVA, there are

• A) Independent variables
• B) One is dependent and other two variables are independent
• C) Depends upon situation
• D) Dependent variables

What happens after the female moths lay eggs?

• A) Mating begins
• B) Male moths die
• C) Cocoons are spun
• D) Pheromones are exuded

What is the significance of the quick round movements of the fifth instar larvae while spinning its cocoon?

• A) Indicates the rate of cocoon spinning
• B) Determines the number of eggs laid
• C) Initiates copulation
• D) Attracts males

Propose a hypothesis for the variation in the number of eggs laid by female moths.

• A) Male moth characteristics
• B) Pheromone intensity
• C) Cocoon spinning rate
• D) Individual differences among female moths

Develop a strategy to optimize lac production based on the information provided.

• A) Increase the number of male lac insects
• B) Improve female development after fertilization
• C) Enhance the host plant environment
• D) Provide optimal conditions for copulation

What determines the thickness of the silk thread produced by silkworms?

• A) Air temperature
• B) Spinneret
• C) Moth species
• D) Silk glands

Define "sibling species" according to the information provided.

• A) Morphologically identical species
• B) Reproductively isolated species with morphological differences
• C) Genetically unrelated species
• D) Species with similar behaviors