Download 4th Grade Science Packet_3 Name and more Lecture notes Biology in PDF only on Docsity!
Name:____________________________________ Date:_________________________ Directions: Follow the instructions below to guide you as you complete this packet.
- Students will: o Read and complete each activity. You should work on science for about 45 minutes each day. o After the activity, complete the Assessment and have parents check your work.
- Parents will: o Assist student with reading directions throughout activities. Reference digital resources for extra support or content specifics. o Your student should work on science for about 45 minutes each day. o Check and discuss your student’s completed work each day.
Making Observations: For the next two weeks, find a safe place in your home where you can see some plants through a window or just outside your door. Select two different types of plants that you will observe each day. (You may also observe living plants inside your home.) Record the date and what you notice about each type plant. You may use pictures, words, or both. Day 1 Day 2 Day 3 Day 4 Day 5 Date: Date: Date: Date: Date: Plant 1: Plant 1: Plant 1: Plant 1: Plant 1:
Plant 2: Plant 2: Plant 2: Plant 2: Plant 2:
Day 6 Day 7 Day 8 Day 9 Day 10 Date: Date: Date: Date: Date: Plant 1: Plant 1: Plant 1: Plant 1: Plant 1:
Plant 2: Plant 2: Plant 2: Plant 2: Plant 2:
Days 1-5 will review SC.3.L.14.1: Describe structures in plants and their roles in food production, support, water and nutrient transport, and reproduction. Days 1 and 2: Please read the next two pages. After you read, write the answers to these questions.
- What are six of the main parts of a flowering plant? _____________________________
- Describe at least two parts of plants that you like to eat. __________________________
- Draw a flowering plant growing in soil. Label the parts of the plant. Draw and label arrows to show how water, nutrients, and food move in different directions through the plant.
Get to the Bottom of It Plants come in many shapes and sizes. Did you know that an important part of most plants is hidden underground? Plants are made up of different parts. Each part has a function that helps the plant grow and survive. The part of the carrot plant that we eat is its root. Roots hold, or anchor, plants in the ground. Roots also take in, or absorb, water and nutrients from the soil. Nutrients are materials that living things such as plants need to grow and stay healthy. Different types of plants have different types of roots. Some roots are long and can reach water deep under the ground. Some roots have many small, hairy branches that spread out just under the soil to get water from a large area. Water and nutrients move from the roots to other parts of the plant.
Day 3: Write the steps in the life cycle of a plant that grows from a cone seed. The first step is given. Draw a picture of the plant at each stage.
Read and complete the sentences below. ( Hint: You may need to look back at what you read on Days 1 and 2.)
The _____________________ of the plant absorb water and nutrients from the ____________.
The water and nutrients next move from the roots to the ______________________________.
From there, the water and nutrients move to the _____________________________________.
This part of the plant uses ____________________________________, air, and water to make
___________________________ for the plant.
_______________
_______________
cone
_______________
Day 4: Draw a picture of each plant part in the table below. Write to describe the function (job) of each part of a plant.
Plant Part Function (Job)
seed
fruit
flower cone
leaves
stem
roots
Days 6-10 will focus on SC.4.L.16.1: Identify processes of sexual reproduction in flowering plants, including pollination, fertilization (seed production), seed dispersal, and germination.
Day 6: Please read. After reading, write to answer the questions.
How do plants reproduce? Plants grow all over Earth. Cactus plants grow in deserts and dry areas. Palm trees and orchids grow in rain forests. Mosses grow in swamps and other damp places. You can also find plants growing in cities—even on buildings and other man-made structures.
Most seed plants reproduce through sexual reproduction. Sperm are the male reproductive cells in plant pollen. Ovules, or eggs, are the female reproductive cells. Look at the flower diagram below.
Pollen is produced in the anther at the top of the stamen. Pollen contains sperm. Ovules (eggs) are produced in the ovary at the bottom of the pistil. Many flowers have both stamens and a pistil. The petals of many flowers are brightly colored to attract bird, bees, and other insects to move the pollen from the stamen to the pistil. Fertilization is the joining of an ovule and pollen. When an ovule is fertilized, it grows into an embryo. The plant embryo forms inside a seed. The embryo is the first stage of a plant’s life. In most seed plants, the seeds form in flowers. For example, apple tree seeds form in the tree’s flowers.
Figure 1 Closer view of tiny spores on bottom Figure 2 Fern of fern leaf
Other seed-bearing plants have cones instead of flowers. The seeds of pine, cedar, and cypress trees all form in cones. The male cones of these plants produce pollen that must be transferred to fertilize the ovules in the female cones. Wind usually carries the pollen from the male cones to the female cones. The woody cones that you may find on the ground around a pine tree are female cones. Some plants do not make seeds. For example, mosses and ferns don’t make seeds. Instead, these plants make spores. A spore is a structure that can produce new plants. The spores form inside a capsule on the underside of the leaves of the fern. The capsule bursts open and releases the spores.
How do pollen, seeds, and spores travel? Pollination is the transfer of pollen from the anthers to the pistil of a seed plant. How does the pollen get to the pistil? Both wind and water can carry pollen. Animals can also carry pollen. The bee is one animal that carries pollen. A bee goes from flower to flower to drink nectar. Along the way, the bee picks up pollen from anthers. It leaves behind pollen on the pistil. That’s how flowers are pollinated. Like pollen, seeds travel by wind, water, and animals. Animals transport seeds when they eat fruits. The seeds leave the animals’ bodies in their waste. Some seeds have thorns or hooks. These attach to an animal’s fur (or stick on the shoes and clothing of humans) and travel on its body. Spores travel by wind. Many spores land in places with enough light and water. These spores can then grow into new ferns or mosses.
- How do seed-bearing plants reproduce? _______________________________________
- How do plants that do not produce seeds reproduce? ____________________________
- What are some of the ways that pollen, seeds, and spores travel? __________________
Day 8: Please read each sentence. Write a word from the vocabulary word list below to complete each sentence.
cone cycle fertilization
germination maturity pollen
pollination seed spore
- The process that happens when a sperm joins with an ovule, or egg, is called
________________________________________.
- _________________________ is the stage in a plant’s life cycle when it has grown enough to
reproduce.
- When an ovule within a pistil is fertilized, a _______________________________ forms.
- All of the stages a plant goes through as it develops is called its life _______________________.
- _________________________________ is when pollen falls on a flower’s pistil.
- The process of a small root and stem beginning to grow out of a seed is called
_________________________________.
- _______________________________ contains the male reproductive cells in seed-forming
plants.
- A __________________________ is the structure that pine trees and cedar trees use to
reproduce.
- A _______________________ can grow into a new moss or fern plant when the conditions are
right.
Day 10: Assessment: Read each question carefully. Circle the letter beside the best answer.
1. An empress tree is a flowering plant that grows in Florida. This tree’s flowers have blue and violet markings. What is the main role of the colored markings on the flowers?
A. to attract insects to carry pollen B. to protect the plant from the Sun C. to produce pollen for reproduction D. to help disperse seeds to other areas
2. The cedar tree is a nonflowering plant. The orange blossom tree is a flowering plant. Both types of trees have similar life cycles. What is the order of events in the life cycles of both plants?
A. seed, pollination, seed dispersal, fertilization B. pollination, seed, seed dispersal, fertilization C. fertilization, pollination, seed, seed dispersal D. pollination, fertilization, seed, seed dispersal
3. The Florida maple tree is a flowering plant. The Florida longleaf pine tree is a nonflowering plant. Both trees go through various stages in their life cycles. Which stage is found in the life cycles of both?
A. making cones B. making seeds C. making fruits D. making flowers
4. In the winter of 2006, millions of honeybees vanished from their hives throughout the country. No one was sure why the bees disappeared. However, everyone was concerned. Why were people concerned about what happened to the honeybees?
A. Bees help with seed dispersal. B. Bees help protect seeds in nonflowering plants. C. Bees play a very important role as plant pollinators. D. Bees protect seeds until they start to germinate into seedlings.
5. The possum grape vine is a plant that is native to Florida. The table below lists some features of the possum grape vine.
Possum Grape Vine Plant Feature Description flower yellow-green growth pattern tall-climbing leaf heart-shaped stem woody
The life cycle of a possum grape vine includes sexual reproduction. Which feature of the plant is used for sexual reproduction?
A. flower B. growth pattern C. leaf D. stem
6. An animal eats the ripe fruit that falls from a cherry tree. The animal digests the fruit and the wastes of the fruit pass through the animal’s body. Later, the animal’s wastes are deposited into the ground. What process of plant reproduction has happened?
A. fertilization B. germination C. pollination D. seed dispersal
7. In fall, Rana notices that acorns have fallen from the oak trees in the park. In spring, she sees tiny plants where the acorns fell. What can Rana conclude that the acorns contain?
A. cones B. eggs C. pollen D. seeds
