Embibe Experts Solutions for Chapter: Sample Paper 1, Exercise 1: Exercise

Author:Embibe Experts

Embibe Experts Biology Solutions for Exercise - Embibe Experts Solutions for Chapter: Sample Paper 1, Exercise 1: Exercise

Attempt the free practice questions on Chapter 14: Sample Paper 1, Exercise 1: Exercise with hints and solutions to strengthen your understanding. Biology Crash Course (Based on Revised Syllabus-2023) solutions are prepared by Experienced Embibe Experts.

Questions from Embibe Experts Solutions for Chapter: Sample Paper 1, Exercise 1: Exercise with Hints & Solutions

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

Which of the following water samples in the table given below, will have a higher concentration of organic matter?   

Water Sample Level of pollution  Value of BOD 
(a) High High
(b) Low Low
(c) Low High
(d) High Low

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

The figure below shows the structure of a plasmid.   

Question Image

A foreign DNA was ligated at BamH1. The transformants were then grown in a medium containing antibiotics tetracycline and ampicillin.  Choose the correct observation for the growth of bacterial colonies from the given table  

  Medium with Tetracycline  Medium with  Ampicillin
(a) Growth No growth 
(b) No growth  Growth
(c) No growth  No growth 
(d) Growth Growth

HARD
12th Uttar Pradesh Board
IMPORTANT

Swathi was growing a bacterial colony in a culture flask under ideal laboratory conditions where the resources are replenished. Which of the following equations will represent the growth in this case?  (Where population size is N, birth rate is b, death rate is d, unit time period is t, and carrying capacity is K). 

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

Which of the following food chains is the major conduit for energy flow in terrestrial and aquatic ecosystems respectively? 

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:

Question Image

Name the organs which secrete the hormones represented in parts A and B.

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

In the figure given below, parts A and B show the level of hormones which influence the menstrual cycle. Study the figure and answer the questions that follow:

Question Image

State the impact of the hormones in part B on the uterus of the human female during 6 to 15 days of menstrual cycle?

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

Trace the events from copulation to zygote formation in a human female. 

MEDIUM
12th Uttar Pradesh Board
IMPORTANT

Trace the development of a megaspore mother cell to the formation of mature embryo sac in a flowering plant.