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www.njctl.org
Growth and Development of
Organisms
Classwork and Homework
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Cell Theory and Mitosis Classwork
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1 What are the three components of cell theory? Students type their answers here
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2 Describe one key feature that is different between plant and animal cells.
Students type their answers here
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3 What is the purpose of mitosis? Students type their answers here
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4 Create a graphic organizer to show the stages of mitosis. Be sure to include descriptions of the following key terms: chromosomes, spindle fibers, cleavage furrow and the names of each phase.
Students type their answers here
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Cell Theory and Mitosis Homework
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5 Complete the following chart about mitosis. Students type their answers here
Characteristic MitosisType of parent cellNumber of divisions of the nucleusNumber of daughter cells producedChromosome number in daughter cellsFunction
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6 What would happen if the cells produced during mitosis were used to create new organisms?
Students type their answers here
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7 Explain one difference between animal and plant cell mitosis.
Students type their answers here
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Asexual Reproduction Classwork
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8 Complete this chart to compare the types of asexual reproduction.
Students type their answers here
Type Description Example organisms
Binary FissionBudding
Mitotic cell divisionAnimal
regenerationVegetative
reproductionCloning
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Asexual Reproduction Homework
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9 Give three reasons why asexual reproduction is beneficial.
Students type their answers here
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10 Draw a picture showing an example of budding. Students type their answers here
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11 Suppose a lizard's tail was broken off and a new tail is then grown. Is this an example of asexual reproduction? Why or why not?
Students type their answers here
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12 Justify the use of cloning to save endangered animals. Students type their answers here
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Sexual Reproduction Classwork
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13 Complete the chart comparing mitosis and meiosis. Students type their answers here
Characteristic Mitosis Meiosis
Type of parent cell
Number of divisions of the
nucleusNumber of
daughter cells produced
Chromosome number in
daughter cellsFunction
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14 What process produces body cells? What process produces sex cells?
Students type their answers here
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15 What is the difference between body cells and sex cells?
Students type their answers here
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16 Describe one advantage and one disadvantage to sexual reproduction.
Students type their answers here
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17 Humans are working to be able to clone individual animals and body parts. What might be the long term effect if we could clone extinct species? Should there be a limit to which species get cloned?
Students type their answers here
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18 Create a graphic organizer to show the stages of meiosis.
Students type their answers here
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Sexual Reproduction Homework
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19 This is a daphnia. It is a small freshwater crustacean with a short life span. It can reproduce sexually and asexually. Why is it advantageous for daphnia to be able to bud AND to release sperm or eggs?
Students type their answers here
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20 Do the math! The first one is done for you. Students type their answers here
Body Cell Primary Sex Cell
Egg or Sperm
20 20 1046
10437
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Reproductive Strategies Classwork
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21 How can behaviors increase the reproductive success of animals? List two behaviors that animals use.
Students type their answers here
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22 Body size is directly related to k or r selected strategies. Position in the food chain is also related. Do you see a pattern in k and r selected species and where they are in the food chain?
Students type their answers here
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23 What are possible environmental factors that can increase or decrease the reproductive success of animals?
Students type their answers here
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Reproductive Strategies Homework
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24 Explain the difference between r-selected and k-selected strategies. List an example of an animal that uses each type of strategy and explain why they use it.
Students type their answers here
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25 Write a paragraph describing an animal's specific behavior that can lead to its reproductive success.
Students type their answers here
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Fertilization and Offspring Classwork
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26 Why must the offspring of birds develop an egg with a hard structure?
Students type their answers here
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27 Reptile eggs are somewhat flexible. This is a genetic trait (to have this shell type). At one time (dinosaur age) reptile eggs were rigid, and laid in above-ground nests. Over time the genetics shifted. What would happen now if a female turtle laid rigid eggs? Would those genes be likely to be passed on?
Students type their answers here
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28 Many consider birds to be "modern day dinosaurs". What are some genetic similarities between birds and dinosaurs?
Students type their answers here
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Fertilization and Offspring Homework
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29 Baby birds are born helpless or precocious (able to walk and follow the mother bird). The birds that are born helpless are most often meat eaters. The precocious birds are primarily plant eaters. How do these eating behaviors work in harmony with the development and survival of the newborn bird?
Students type their answers here
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30 Give five traits of mammals that make them different from other animals.
Students type their answers here
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Plant Structure and Pollination Classwork
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31 Label the flower below. Find the stamen (anther and filament), pistil (stigma and style only) and petals.
Students type their answers here
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32 The stamen on the flower are extremely long. Why is this an advantage for this plant?
Students type their answers here
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33 What type of pollinator does this plant most likely require? Explain why.
Students type their answers here
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Plant Structure and Pollination Homework
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34 Look at the flower structures in the pictures. Explain how each plant minimizes the possibility of self-pollination.
Students type their answers here
Lemon tree flower Hibiscus flower Mulberry female flower
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35 Fill in the chart below. Beside each structure, briefly describe its function in plant reproduction.
Students type their answers here
Male flower structures
Female flower structures
Neutral flower structures
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Seed Formation and Dispersal Classwork
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36 When you eat an orange, there are many seeds inside the fruit. Where do these seeds come from?
Students type their answers here
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37 Tumbleweed (slide 121) is a non-native plant in the US. A few settlers brought it from Europe to the midwest. Look at the distribution map of Russian-thistle (tumbleweed). How did it spread from the midwest to the east coast? Why isn't the population kept in check?
Students type their answers here
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38 Velcro is a product of "biomimetic" design. It mimics the seed type (burr) shown here. How are velcro and this burr similar? Do you know any other biomimetic designs? Why is it smart to copy nature's designs?
Students type their answers here
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39 How do animals influence the success of plant reproduction?
Students type their answers here
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Seed Formation and Dispersal Homework
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40 How do plants overcome the lack of locomotion to find mates and disperse offspring? Write a paragraph explaining and using at least three different specific examples.
Students type their answers here
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Environmental and Genetic Factors Classwork
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41 How can animals or plants that have the same DNA have different physical characteristics?
Students type their answers here
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42 What is meant by the phrase "nuture vs nature"? Students type their answers here
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43 Use the internet or other available resources to identify the effect of wind, nutrient or open space on a specific animal or plant.
Students type their answers here
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Environmental and Genetic Factors Homework
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An ecosystem remains balanced unless there is a major shift, such as a fire, drought or human intervention. Consider the Yellowstone National Park ecosystem. Each change affected a different population. For each change described, draw up or down arrows to show the change in population of the listed plants, animals and other ecosystem features. Use words to explain what happens to the environment. Then give a short explanation of why that happened.
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44 Wolves, bear and mountain lions are killed. Students type their answers here
Elk ___ Bison ___ Deer ___
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45 Elk, bison and deer populations increase dramatically. Students type their answers here
Grasses ___
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46 Elk, bison and deer eat winter food in the fall. Students type their answers here
Aspen ___ Elk ___ Bison ___ Deer ___
Crows ___ Badgers ___
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47 All aspen and other small trees are eaten. Students type their answers here
Beaver ___
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48 Soil, once held by roots, becomes loose. Students type their answers here
Soil ___
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49 Beaver dams fall apart. Students type their answers here
Streams ___ Fish ___ Migratory birds ___
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50 Bear and mountain lions return to the park. Students type their answers here
Elk ___ Deer ___ Grasses ___ Trees ___
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51 Wolves are brought back to the park. Students type their answers here
Elk ___ Deer ___ Bison ___ Beaver ___
Birds ___ Streams ___ Fish ___
Otter ___ Aspen ___ Grasses ___
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