Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 40.4, Problem 1CS
Summary Introduction
To describe: The model of seed germination by a flow diagram.
Introduction: The fusion of male and female gametes results in the process of fertilization. The process of embryogenesis takes place after the fertilization of gametes. After a certain period of time, the embryo gets covered by a seed coat and the formation of seed takes place. The ovules, after fertilization, result in the formation of seeds.
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Given below is an experimental setup to
demonstrate a particular tropic movement in
germinating seeds. Study the diagram and
answer the questions that follow
Perforated trough
Moist sawdust
- Germinating seed
-Brick
(i) Label the parts 1 and 2.
(ii) Name the tropic movement shown by part
1.
(iii) Part 1 is affected by two stimuli. Name
them. Which one of the two is stronger?
(iv) What is Thigmotropism ? Give one
example.
(v) What is meant by 'Positive' and 'Negative'
tropic movements in plants?
INSTRUCTION: Write True or False.
1. An aggregate fruit develops from the fused ovaries of a floral cluster.
2. In the fern leaf, the clusters of sporangia are called sporophylls.
3. The plumule is the first seed leaf that absorbs and digests nutrients needed for seed germination.
4. A false fruit develops from the expansion of the hypanthium or floral tube that encloses the ovary.
5. The endocarp is the edible fleshy part of the fruit.
6. In a bean seed, the part of the embryo which develops into the leaves and upper portion of the stem is known as the hypocotyl.
7. The embryos of corn and other grass seeds are partially enclosed in a protective sheath called the coleorhiza.
8. The embryonic shoot system is the radicle.
9. The seed coat develops from the nucellus of the ovule.
10. In the Zea mays seed, the aleurone layer is located outside the endosperm layer.
11. The pedicel bears more than one flower in a cluster.
12. The sunflower (Helianthus sp.) is an example of a capitulum…
What are some of the factors and conditions that affect seed germination?
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Chapter 40 Solutions
Biology
Ch. 40.1 - Core Skill: Connections Look back to Figure 32.14...Ch. 40.1 - Prob. 1CCCh. 40.1 - Prob. 2CCCh. 40.2 - What inference can you draw from the observation...Ch. 40.2 - List several ways in which the flowers at the rim...Ch. 40.2 - Why do you think Liang and Mahadevan used Lilium...Ch. 40.2 - How did time-lapse video improve data gathering in...Ch. 40.3 - Prob. 1CCCh. 40.3 - Prob. 2CCCh. 40.3 - Prob. 1CS
Ch. 40.4 - Prob. 1CCCh. 40.4 - Prob. 2CCCh. 40.4 - Prob. 1CSCh. 40 - Where do the pollen grains of flowering plants...Ch. 40 - Prob. 2TYCh. 40 - Where would you find female gametophytes of a...Ch. 40 - How does double fertilization occur in flowering...Ch. 40 - Prob. 5TYCh. 40 - Prob. 6TYCh. 40 - Prob. 7TYCh. 40 - If an ovary contains eight ovules, how many seeds...Ch. 40 - Prob. 9TYCh. 40 - Prob. 10TYCh. 40 - Prob. 1CQCh. 40 - Prob. 2CQCh. 40 - Prob. 3CQCh. 40 - Prob. 1COQCh. 40 - How do plants prevent the production of many...
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