Question : Directions: In a certain code language,
A + Z means A is the mother of Z;
A – Z means A is the brother of Z;
A × Z means A is the sister of Z;
A ÷ Z means A is the daughter of Z.
Based on the above, how is J related to L, if J + K ÷ L – T × R?

Option 1: Mother

Option 2: Husband's sister

Option 3: Wife

Option 4: Sister

Question : Directions: In a certain code language,
Z + B means Z is the mother of B,
Z – B means Z is the brother of B,
Z @ B means Z is the sister of B,
Z # B means Z is the father of B.
If D – E # F – G, then how is D related to G?

Option 1: Father's father

Option 2: Father's brother

Option 3: Son

Option 4: Brother

Question : In ecology, _________ is determined by dividing the biomass per unit area by the age of the forest ecosystem.

Option 1: biomass density

Option 2: biomass size

Option 3: biomass energy flow

Option 4: biomass productivity

Question : Synecology can be defined as which of the following?

Option 1: A branch of science that deals with the interrelationship of individual species with their environment.

Option 2: A branch of science that deals with the interrelationship of two species.

Option 3: A branch of science that deals with the interrelationship of the whole biome.

Option 4: A branch of ecology that deals with the structure, development and distribution of ecological communities.

Question : If $\small x=a\left (b-c \right),\; y=b\left (c-a \right) ,\; z=c\left (a-b \right)$, then the value of $\left (\frac{x}{a} \right)^{3}+\left (\frac{y}{b} \right)^{3}+\left (\frac{z}{c} \right)^{3}$ is:

Option 1: $\frac{2xyz}{abc}$

Option 2: $\frac{xyz}{abc}$

Option 3: $0$

Option 4: $\frac{3xyz}{abc}$