10th Science Book Back Answers Unit 12 – Plant Anatomy and Plant Physiology:

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Samacheer Kalvi 10th Science Book Back Answers Biology Unit 12 – Plant Anatomy and Plant Physiology:

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10th Science – Biology

Unit 12: Plant Anatomy and Plant Physiology

I. Choose the best answer:

1. Casparian strips are present in the root.
a) cortex   b) pith    c) pericycle   d) endodermis
Ans.: d) Endodermis

2. The endarch condition is the characteristic feature of
a) root    b) stem   c) leaves   d) flower
Ans.: b) Stem

3. The xylem and phloem arranged side by side on the same radius is called.
a) radial    b) amphivasal   c) conjoint   d) None of these
Ans.: c) Conjoint

4. Which is formed during anaerobic respiration
a) Carbohydrate   b) Ethyl alcohol   c) Acetyl CoA   d) Pyruvate
Ans.: b) Ethyl alcohol

5. Kreb’s cycle takes place in
a) chloroplast    b) mitochondrial matrix
c) stomata          d) inner mitochondrial membrane
Ans: b) mitochondrial matrix

6. Oxygen is produced at what point during photosynthesis?
a) when ATP is converted to ADP     b) when CO2 is fixed
c) when H2O is splitter                       d) All of these
Ans.: c) When H2O is splitted

II. Fill in the blanks

1. Cortex lies between _______.
Ans.: Epidermis and Endodermis

2. Xylem and phloem occurring on the same radius constitute a vascular bundle called ______.
Ans.: Conjoint bundle

3. Glycolysis takes place in _______.
Ans.: Cytoplasm

4. The source of O2 liberated in photosynthesis is _______.
Ans.: Photolysis of water

5.  ______ is the ATP factory of the cells.
Ans.: Mitochondria

III. True or False (Correct the Statement if it is false)

1. Phloem tissue is involved in the transport of water in plants. Ans.: False.
Correct statement: Phloem tissue is involved in the transport of food in plants.

2. The waxy protective covering of a plant is called a cuticle. Ans.: True.

3. In the monocot stem cambium is present between the xylem and phloem. Ans.: False.
Correct statement: In the dicot stem cambium is present in between the xylem and phloem.

4. Palisade parenchyma cells occur below the upper epidermis in the dicot root. Ans.: False.
Correct statement: Palisade parenchyma cells occur below the upper epidermis in dicot leaf.

5. Mesophyll contains chlorophyll. Ans.: True.

6. Anaerobic respiration produces more ATP than aerobic respiration. Ans.: False.
Correct statement: Aerobic respiration produces more ATP than anaerobic respiration.

IV. Match the following:

Question.

Answer:
1. (c) Fem
2. (d) Secondary growth
3. (a) Dracaena
4. (e) Conduction of water
5. (b) Translocation of food.

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