9.2 Maintaining a Balance Contextual Outline Multicellular organisms have specialized organ systems that are adapted for the uptake and transport of essential nutrients from the environment‚ the utilisation or production of energy and the removal of waste products arising from cellular activities. The basis of healthy body functioning in all organisms is the health of their cells. The physical and chemical factors of the environment surrounding these cells must
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water from a cell with high concentration of water to a cell with low concentration through the permeable membrane. Once the water has moved down the concentration gradient it reaches a vessel called a xylem. As water transpires form leaves it creates root pressure and water is forced up through the xylem. The cohesion of water allows them to bond together and aid in this process called the ‘transpiration pull’. Humans need water for every part of life. Like in plants water is absorbed in the walls
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PRACTICAL 6 Seed Plants (Gymnosperms and Angiosperms) OBJECTIVES: 1. To describe the features of seed plant life cycle and the concept of the dominant generation. 2. To describe the life histories and related reproductive structures of gymnosperms and angiosperms. 3. To summarize the features that distinguish gymnosperms and angiosperms. 4. To discuss the advantages of seed plants to dominate land and their evolutionary adaptations on land. EXPERIMENT 1: Gymnosperms INTRODUCTION: Gymnosperms
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diffusion‚ and active transport. once water and dissolved nutrients have entered the root xylem‚ they are transported upward to the stems and leaves as part of the process of transpiration‚ with a subsequent loss of water due to evaporation from the leaf surface. Too much water loss can be detrimental to plants; they can wilt and die (AP Bio Big Idea 4). The transport of water upward from roots to shoots in the xylem is governed by differences in water potential‚ with water molecules moving from an area
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Lesson 1 Assignment Questions Describe the scientific system by which plants are classified‚ in a report of up to 500 words. In this report‚ Cover: *the significance of the binomial system *why common names of plants should not be used to correctly identify plants. The scientific system to classify and naming plants are controlled and coordinated by botanist throughout the world. The system of classification in plants is to classify them in groups with similar characteristics. Then
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How does light intensity affect the rate of photosynthesis? Poorly Pondweed Questions 1) How does light intensity affect the rate of photosynthesis? 2) How does temperature affect the rate of photosynthesis? sunlight carbon dioxide + water glucose + oxygen chlorophyll sunlight 6CO2 + 6H2O àààààà C6H12O6 + 602 chlorophyll Prediction I predict that the more intense the light‚ the higher the rate of photosynthesis. To photosynthesise‚ plants need light. It provides the energy for the process
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endodermis and the pericycle surround the vascular tissue‚ protecting water and nutrient conducting tissue. Only eudicots stems are capable of secondary growth. This secondary growth comes from lateral meristems‚ which allows for eudicots to gain secondary xylem and phloem to increase the width of both root and stem of the plant (Lecture 12‚ 3 Oct.‚ Haselhorst 2016). The stem has been modified to benefit human consumption‚ an example of this is the Irish Potato increasing stem size to be used for food
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2.3.1 Organelle Structure and function nucleus enclosed in double membrane with pores contains chromosomes with genes made of DNA to control protein synthesis ribosomes made of RNA and protein free in cytoplasm or attached to RER site of protein synthesis rough endoplasmic reticulum interconnected sacs with ribosomes attached transport proteins to other parts of cell smooth endoplasmic reticulum synthesis of lipids and steroids mitochondria double
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Many years ago‚ plants made the drastic move from water onto land. Although at first they had a very difficult time surviving on land‚ they gradually became acclimated to their new terrestrial habitat. This was only after they had formed adaptations to overcome a slew of problems that plagued them on land. For example‚ they had needed an aquatic environment for both reproduction and to support the plant body‚ and they had to adapt to living without their aquatic surroundings. In addition‚ they now
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Independent Study Unit: Apple Tree Course/ code: Biology‚ Grade 11/ SBI 3U This paper will examine apple trees by categorizing them through the following classifications‚ the vascular system‚ structures‚ its responses‚ practicality‚ and ecological importance which will be presented in a topical manner. Classification The classification of plants is the understanding of the relationships and similarities between plants. It is important to identify unknown species‚ to group or assign names
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