Chapter 9 - Plant Biology [242 marks] 1. How do auxins cause plant shoots to grow towards light? [1 mark] A. Increase cell division on the side of the stem near the light source B. Increase cell division on the side of the stem away from the light source C. Increase cell elongation on the side of the stem near the light source

Upper epidermis - Consists of a single layer of cells found on the upper surface of the leaf. It is covered by a thick waxy cuticle. The main function of the upper epidermis is water conservation. It prevents the loss of water from the upper surface where the light intensity and heat are the greatest.

Our focus will be on Topic 9: Plant Biology. This topic has 14% of occurance in the papers 1 and 2. Below you can find the subtopics of Topic 9 and the percentage of how many times they appear on the exams from the past years. 9.1 Transport in the xylem of plants Very Common SubTopic The sperm and egg each contain 1/2 gene material to form new plant. fertilized egg will develop into a plant seed.

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Change the different conditions in which the plants are found as well as the species. Independent Variable: Plant species + humidity/temperature/ light intensity Phototropism •Phototropism is the growth of stems of plants toward light - it is probably the best known of the plant tropisms - phototropism is caused by elongation of the cells on the shaded part of the plant - so that entire plant bends or curves toward the light •This growth pattern is caused by the hormone auxin - auxin migrates to the shaded part of the plant and stimulates increased cell growth and elongation on the shaded part of the plant IAA = Auxin 9.3 U.4 Plant shoots respond Topic 9: Plant biology: 9.1 Transport in the xylem of plants: 9.2 Transport in the phloem of plants: 9.3 Growth in plants: 9.4 Reproduction in plants: Topic 10: Genetics and evolution: 10.1 Meiosis: 10.2 Inheritance: 10.3 Gene pools and speciation: Topic 11: Animal physiology: 11.1 Antibody production and vaccination: 11.2 Movement: 11.3 The kidney and osmoregulation Plant Structure and Growth - Modifications, Phototropism (IB Biology)Table of Contents:00:00 - Root, stem and leaf modifications02:25 - Apical and Lateral Me Se hela listan på blog.prepscholar.com Share your videos with friends, family, and the world [DOWNLOAD] Ib Biology Plant Exam Questions And Answers . IB Biology Exam Secrets HL Topic 9: Plant biology. Our focus will be on Topic 9: Plant Biology. This topic has 14% of occurance in the papers 1 and 2. Plants transport organic compounds (like sugars) from sources (leaves) to sinks (flowers, roots). Transport occurs along hydrostatic pressure gradients.

Uptake of water is imbibition. As seed imbibe water they expand and the enzymes and food supplies become hydrated.

Biology: Browse last pages, blog posts, check sitemap, get Teaching Materials and share knowledge with the thinkib.net IB community.

The plant used in this experiment was Cicer arietinum L  5. Evolution and biodiversity.

Play this game to review Biology. A fungicide is a chemical that kills fungi. A fungicide dissolved in water was applied to the soil in which a rose plant was growing. It later appeared in the leaves. How did the fungicide reach the leaves?

Summary Summary IB Biology Unit 9- Plant Biology. Summary Notes designed for the International Baccalaureate Diploma Programme. These notes are detailed yet concise, with all the information to achieve a 7 in IB Biology HL or SL. These notes were made using information from the IB syllabus, Oxford IB Diploma HL Biology Textbook, Bioninja and the Biology HL There are two types of IB assessment: Internal and External. External assessments are the exams that you can choose to take in May. Internal Assessments are completed during the semester(s) you take the class.

Transport occurs along hydrostatic pressure gradients. Active transport causes high concentrations of solutes in the phloem sieve tubes at the source. This leads to water uptake by osmosis and raised hydrostatic pressure. And the plant which is useful for this experiment is Elodea.
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22, Exploring stomatal density in a variety of conditions. 23, Testing the effectiveness of toothpaste types. 24, Investigating the effect of smoke water on the germination and growth of E.pilularis.

Overall Rating 9.4. Overview: Bioninja is a wonderful free website that covers the SL and HL … 2011-09-02 Strongly Recommended: Students are encouraged to gain research experience (IB 390 and/or IB 490).
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21, The effect of temperature / light on fruit ripening. 22, Exploring stomatal density in a variety of conditions. 23, Testing the effectiveness of toothpaste types. 24, Investigating the effect of smoke water on the germination and growth of E.pilularis. 25, Exploring the effect of sunlight on biomass.

Topic 6 Human physiology. Topic 11 Animal physiology. Topic 10 Genetics and evolution. Topic 9 Plant biology. Topic 7  The IB Diploma Programme (DP) is a rigorous, academically challenging and balanced International Baccalaureate Organization 2014 Plant biology. 10.