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Published on: 19/10/2019
Plant Anatomy and Plant Physiology
Download Tamil Nadu 10th Standard Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Science Test1.
Oxygen is produced at what point during photosynthesis ?
when ATP is converted to ADP
when CO2 is fixed
when H2O is splitted
All of these
2.
The endarch condition is the characteristic feature of
root
stem
leaves
flower
3.
4.
The innermost layer of cortex in root is called ______________
5.
__________ is ATP factory of the cells
6.
The source of O2 liberated in photosynthesis is __________
7.
Glycolysis takes place in ________.
8.
Cortex lies between _______.
9.
Cambium
10.
Tissue system
11.
Phloem
12.
Amphivasal
13.
Amphicribal
14.
List the difference between Dicot and Monocot stem.
15.
Name the internal factors affecting photosynthesis.
16.
Name the tissue systems as classified by Sachs.
17.
Name the phenomenon by which carbohydrates are oxidized to release ethyl alcohol.
18.
What is the common step in aerobic and anaerobic pathway?
19.
What is collateral vascular bundle?
20.
Write a note on vascular tissue system.
21.
Write the reaction for photosynthesis?
22.
What is respiratory quotient?
23.
Draw and label the structure of oxysomes.
24.
Differentiate the following
a) Monocot root and Dicot root
b) Aerobic and Anaerobic respiration
1.
(c)
when H2O is splitted
2.
(b)
stem
3.
(d)
4.
( )
Epidermis and Endodermis
5.
( )
Mitochondria
6.
( )
water(H2O)
7.
( )
cytoplasm
8.
( )
epidermal and vascular tissues
9.
Open vascular bundle
10.
Sachs
11.
Translocation of food
12.
Dracaena
13.
Fern
14.
|
S.No: |
Tissues |
Dicot Stem |
Monocot Stem |
|---|---|---|---|
| i | Hypo dermis | Collenchymatous | Scleren chymatous |
| ii | Ground tissue | Differentiated into cortex, endodermis, pericycle and pith | Un differentiated |
| iii | Vascular bundles | i. Less in number ii. Uniform in size iii. Arranged in a ring iv. Open v. Bundle sheath absent |
i) Numerous ii) Smaller near periphery, bigger in the centre iii) Scattered iv) Closed v) Bundle sheath present |
iv |
Secondary growth | Present | Mostly absent |
| v | Pith | Present | Absent |
| vi | Medullary rays | Present | Absent |
15.
(i) Pigments.
(ii) Leaf age.
(iii) Accumulation of carbohydrates.
(iv) Hormones.
16.
(i) Dermal or Epidermal tissue system
(ii) Ground tissue system
(iii) Vascular tissue system
17.
Anaerobic respiration is a process by which carbohydrates are converted into ethyl alcohol.
18.
Glycolysis is the common step in both aerobic and anaerobic pathway.
19.
When xylem lies towards the centre and phloem lies towards the periphery, it is called collateral vascular bundle.
20.
(i) It consists of xylem and phloem tissues.
(ii) They are present in the form of bundles called vascular bundles.
(iii) Xylem conducts water and minerals to different parts of the plant.
(iv) Phloem conducts food materials to different parts of the plant.
There are three different types of vascular bundles namely:
(i) Radial
(ii) Conjoint
(iii) Concentric
(i) Radial Bundles:
(i) Xylem and phloem are present in different radii alternating with each other. Eg: roots.
(ii) Conjoint bundles: Xylem and phloem lie on the same radius. There are two types of conjoint bundles
a) Collateral:
(i) Xylem lies towards the centre and phloem lies towards the periphery.
(ii) When cambium is present in collateral bundles, it is called open. Eg: dicot stem and collateral bundle without cambium is called closed. Eg: monocot stem.
b) Bicollateral:
In this type of bundle, the phloem is present on both outer and inner side of xylem. Eg: cucurbita.
(iii) Concentric bundles: Vascular bundle in which xylem completely surrounds the phloem or vice versa is called concentric vascular bundle. It is of two types:
Types:
a) Amphivasal:
Xylem surrounds phloem. Eg: Dracaena
b) Amphicribral:
Phloem surrounds xylem. Eg: Ferns Endarch: Protoxylem lies towards the centre and metaxylem lies towards the periphery. Eg: stem. Exarch: Protoxylem lies towards the periphery and metaxylem lies towards the centre. Eg: roots.
21.
Carbon dioxide + Water ➝ Glucose + Water + Oxygen
22.
Respiratory quotient is the ratio of volume of carbon dioxide liberated and the volume of oxygen consumed during respiration. It is expressed as
RQ = \(\frac{Volume \ of \ { CO }_{ 2 } \ liberated}{Volume \ of \ { O }_{ 2 } \ consumed}\)
23.
24.
a) Monocot root and dicot root
|
S.No |
Tissues |
Monocot Root |
Dicot Root |
|---|---|---|---|
| i | Number of Xylem | Polyarch | Tetrarch |
| ii | Cambium | Absent | Present (During secondary growth only) |
| iii | Secondary Growth | Absent | Present |
| iv | Pith | Present | Absent |
b) Aerobic respiration and anaerobic Respiration:
| Basis for Comparison |
Aerobic Respiration |
Anaerobic Respiration |
|---|---|---|
| It occurs in | The cytoplasm and mitochondria. | Cytoplasm only. |
| Final product | Carbon dioxide, water and energy |
Carbon dioxide, Lactic acid (animal cells), ethanol (plant cell) and energy |
| It requires | Oxygen and glucose to produce energy |
It does not require oxygen but uses glucose to Produce energy |
| Number of ATP released | 38 ATP. | 2 ATP. |
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Tamilnadu Stateboard 10th Standard Subjects
Tamilnadu Stateboard Standards
