1. DIRECTIONS: The questions in this segment consist of two statements, one labelled as "assertion A?? and the other labelled
as "reason R". You are to examine these two statements carefully
and decide if the assertion A and reason R are individually true
and if so, whether the reason is a correct explanation of the
assertion. Select your answers to these items using codes given
below.
Assertion (A): Chewing breaks down the food into small pieces and
assists in digestive process.
Reason (R): Chewing increases the surface area of food for the
saliva to act upon
a) Both statements (A) and (R) are true and statement (R)is the correct
explanation of statement (A)
b) Both statements (A) and (R) are true and statement (R)is the
incorrect explanation of statement (A)
c) Statement (A) is true but statement (R)is false
d) Both statements (A) and (R) are false​

During sunny hours, a large amount of build up between the hours of 1: 00-5: 00 pm. a. ozone b. mercury c. lead d. sulfuric acid

Rease is an enzyme used by plants to break down urea (a nitrogen-containing compound) into carbon dioxide and ammonia. urease urea > > > carbon dioxide and ammonia ammonia is broken down by plants into a nitrogen source plants need to grow. thus, plants could not use urea as a nitrogen source unless it was first converted to ammonia. in soybean plants there are two different kinds of urease, one produced in the seeds and the other produced in the leaves of the plant. three types of soybean plants were used in a set of experiments: normal soybeans and two mutant strains, one lacking the urease in the seeds only (strain 1) and one lacking urease in the leaves only (strain 2). experiment 1 separate areas in a field were planted with normal, strain 1, and strain 2 soybeans. all types of soybeans appeared to grow, flower, and produce seeds equally well. there were no externally detectable differences among the strains. experiment 2 small pieces of plant leaves of equal weight were obtained from each type of soybean plant and separately placed on media in culture dishes. tissue growing in this way will become an unorganized clump of cells referred to as callus. to provide a controlled nitrogen source, half the tissue samples of each type were placed on media containing urea, and the other half of the samples were placed on media containing ammonia. after 30 days, the weight gain for each of the callus samples was determined. results are shown in the table below.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino