Worksheets8th Science Fall Final
Total questions: 48
Worksheet time: 25mins
Variation provides the raw material (Different DNA) for natural selection, enabling adaptation and evolution.
Which type of data is collected when you measure the temperature of a liquid?
Qualitative
Observation
Quantitative
Inference
What is the main advantage of sexual reproduction over asexual reproduction?
Produces identical offspring
Faster population growth
Greater genetic diversity
Requires only one parent
Which layer in the rock strata is most likely to contain the youngest fossils?
All layers contain equally young fossils
The middle layer
The bottom layer
The top layer
What is the dependent variable in an experiment measuring plant growth with different amounts of sunlight?
Type of plant
Amount of sunlight
Soil type
Height of the plant
Which of the following best describes an adaptation?
A trait that helps an organism survive and reproduce in its environment
A trait that is always inherited from parents
A trait that only appears in fossils
A trait that decreases an organism's chance of survival
What type of asexual reproduction is taking place?
Fragmentation
Binary Fission
Regeneration
Budding
Somatic cells divide by _____.
meiosis
mitosis
How many chromosomes do somatic cells have (in humans)?
23
18
46
55
The smallest structural and functional unit of an organism is a ____.
atom
cell
chromosome
element
The process where a pair of chromosomes pair up and exchange genetic material.
gamete cells
replication
reproduction
crossing over
During meiosis, _____ haploid cells are formed and are genetically different from the parent cells.
2
4
32
46
Sex cells are formed
Mitosis
Meiosis
Both
Neither
Produces skin cells
Mitosis
Meiosis
Both
Neither
Forms 4 new cells
Mitosis
Meiosis
Both
Neither
New cells have the same amount of chromosomes as the original cell
Mitosis
Meiosis
Both
Neither
New cells have half the number of chromosomes as the original cell
Mitosis
Meiosis
Both
Neither
