The main period of organogenesis is trimster during pregnancy. A. in the first trimester B. in the second trimester C. in the third trimester D. during the blastocyst stage

Pregnancy in the second trimester is maintained by ..............

A meeting hall has 30 rows in all. There are 20 seats in the first row, 24 seats in the second row and 28 seats in the third row and so on. How many seats are there in the hall? a) 136 b) 4640 c) 2340 d) 192

Jinal saves ₹1600 during first year,₹2100 in the second year,₹2600 in the third year,If she continues her saving in this pattern,in how many years will she save ₹38,500?

Assuming the first part of each statement as p, second as q and the third as r, the statement 'If A, B, C are three distinct points, then either they are collinear or they form a triangle' in symbolic form is

A ball orf mass 100 g dropped on the ground from 5 m bounces repeatedly. During every bounce 64% of the potential energy is converted into kinetic energy. Calculate the following: (a) Coefficient of restitution (b) Speed with which the ball comes up from the ground after third bounce. (c) Impulse given by the ball to the ground during this bounce. (d) Average force exerted by the ground if the impact lasts for 250ms.​

Read the following statements and find out the incorrect statement. A. Ultimately all the food that is respired for life processes comes from photosynthesis. B. The energy released by oxidation in respiration is directly used for the life processes. C The carbon skeleton produced during respiration is used as precursors for biosynthesis of other molecules in cell. D. Plants, unlike animals, have no specialised organs for gaseous exchange but they have stomata and lenticels for this purpose. E. During oxidation within a cell, all the energy contained in, respiratory substrates is released free into the cell in a single step, which is trapped as chemical energy in the form of ATP.

Abortion during the first trimester of pregnancy may occur due to lack of ............. hormone.