Help in 8th Grade science

Question

anonymous · Answer

Some scientists studying aquatic plants notice that
flooding often leads to a decrease in the rate of
photosynthesis among aquatic plants. Flooding
causes more sediment to be suspended in the water.
The increased sediment concentration decreases
the amount of light that reaches the plants. Why
does a decreased rate of photosynthesis lead to a
decrease in a plant population?
A Less water is available for absorption.
B Less tissue is available for plant growth.
C Less energy is available for reproduction.
D Less soil is available for leaf development.

7 Which statement describes why an offspring and
its mother share many common traits?
A The mother and the offspring both have
mitochondria.
B The mother and the offspring both have
identical nuclei.
C The mother provided half of the offspring’s
chromosomes.
D The mother provided all of the offspring’s
chromosomes.


In a certain type of flowering plant, the b allele
codes for white-flower color, and the B allele
codes for blue-flower color. The flowering plant
produces a sex cell which includes a b gene.
Which of the following best represents a possible
genotype present in the parent plant’s cells?
A B
B b
C Bb
D BB


A scientist wanted to study a cell which lacked
the structure that contains the materials needed to
control cell activities. Which structure would need
to be missing from the cell for this study to take
place?
A nucleus
B vacuole
C lysosome
D mitochondrion

Which body system distributes nutrients to cells?
A circulatory
B endocrine
C respiratory
D integumentary

The doctor strikes the patient’s knee with a rubber
hammer and observes the reaction. The doctor is
checking the __________.
A Nervous System
B Muscular System
C Circulatory System
D Integumentary System

destinymasha · Answer

7] C -   The mother provided half of the offspring’s
chromosomes.  Each parent contributes 23 chromosomes each to their offspring. Combined, the offspring has 46 chromosomes from its parents.   9] Nucleus 
10] The circulatory system

~The rest you must study to find out