Answer:
B. Not all nonvascular plant bear seeds, but all vascular plants do bear seeds.
Explanation:
The body converts most carbohydrates<span> into glucose (sugar), which is used to fuel cells such as those of the brain and muscles. </span>
Answer:
Option B, 
Explanation:
Given-
The average surface area of one foot pad of an elephant is 
Weight of an Asian elephant is 
newton
As we know, pressure is equal to total weight divided by total area of the surface on which it is concentrated.
Thus, pressure on one foot pad of elephant is 
Hence, option B is correct answer
Answer:
1. male toads collected from the suburbs
Explanation:
<em>The control group in this case would the </em><em>male toads collected from the suburbs.</em>
In an experiment, the control group represents a group that receives every other treatment as the experimental group except that of the variable whose effect is the main aim of the experiment.
In observational study, the control group is selected based on a randomly chosen area depending on the variables being examined.
In this case, the researchers are out to investigate whether the reproductive problems observed in the population of cane toads are due to poisons from chemicals associated with agriculture. The control group would be those that are sure not to be a recipient of the poisons associated with agricultural chemicals. Hence, the population of toads close to agricultural sites would form the study group while those far from agricultural sites would represent the control group.
<u>Therefore, the male toads collected from the suburbs would be the control group. </u>
Answer:
Plants alternate their generations between sporophyte and gametophyte generations.
Explanation:
Plants life cycle has two generations i. e. Sporophyte and gametophyte. Sporophyte is the first phase of plant life cycle in which spores are produced that are diploid i. e. double number of chromosomes while the second phase is gametophyte in which gametes are produced that are haploid i. e. half number of chromosome. Gametes contains sperm cells and egg cells which fuse together in the process of fertilization.
