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Cairo University Semester :The Second

Faculty of Agriculture Academic Year:2010/2011

Agricultural Botany Dept. Allowed Time : 2 hours

Agricultural Botany/ Physiology 101 ABT English Program

Your answer must be supported by drawings as you can

Exam in Two PagesAnswer the following questions.

Question 1: (15 marks)

A- Define with drawing Three of the following scientific terms:-(7.5 marks)

1- Leaf venation:

It is the distribution of veins (vascular bundles) through the blade

of leaf

2- Abscission zone: it is an area located perpendicular to petiole.3- The pit: it is an area of the primary wall does not have secondary wall

located on.

4- freely membrane: it is a membrane which allow any substance to pass

through it

B- Choose the correct answer between brackets: (7.5 marks)

1. An organ digests wastes inside the plant cell.

(pits - Cell vacuole - ribosomes - nuclear pore)

2. The tissue which consists of vessel, tracheids, parenchyma and fibers.

(epidermis - cortex - sclerenchyma - xylem) .

3. The sclerenchyma tissues function is.

(protein synthesis - starch storage - respiration - supporting)4. Which of these tissues considered as a simple tissue ?

(xylem - phloem - colenchyma - all of these).

5- Fibers have bordered pits on the perpendicular wall.

(sieve plate - tapered end walls - perforation plate - bordered pits)

Question 2: (15 marks)

A- Complete the following sentences: (7.5

marks)

1- Sclerenchyma tissue consists of two types cells areSclereids and Fibers

2- Lateral roots are initiated frompericycle

3- Primary phloem consists ofSieve tube member, sieve cell, parenchyam and fibers

4- Plastid types are chloroplastid, chromoplastid, andproplastid

5- Vascular cambium cells arefusiform and ray initials

B- Complete the following table : (7.5 marks)

Organ Structure FunctionStomata Stomatal pore, guard cell Gas exchange

Choloroplastids Double membrane, stroma, grana Photosynthesis

Mitochonderia Double membrane, matrix Respiration

Ribosome Spherical body Protein synthesis

Meristematic cell Cell wall, protoplast & nucleus division

Question 3: (15 marks)

A- Give the key word suitable for each of the following statement: (5 marks)

1

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1 International Code of Botanical Nomenclature ICBN

2 The dominant form of Mosses, that contains antherdia and

archegonia

gametophyt

e

3 Conjunction between male and female gametes each has (N)

chromosome to form zygote (2N).

fertilization

4 The flower that contain androecium and gynoecium and lack ofcalyx and corolla

Perfect

5 The type of classification based on morphological similarities of

vegetative characters of the plant.

Artificial

B- Answer the following sentences with (Yes) or (No). (5

marks)

1- Double fertilization occurs in gymnosperms. (No)

2- Ferns are vascular plants. (Yes)

3- Complete flower lack of androecium and gynoecium. (No)

4- Each genus belongs to order. (No)

5- Eukaryotes have true nucleus. (Yes)

C- Complete the following sentences: (5 marks)

1- Asexual reproduction types are Fission, vegetative and spores

2- The order includes group of relatedfamlies.

3- The common and constant stage of gymnosperms issporophyte

4- In flowering plants, the ovule consists ofegg cell, synergid cells, pollar

nuclei and antipodial cells.

5- Spirogyra belongs to division chlorophyta

Question 4: (15 marks(

In glycolysis, the glucose, is broken down into two molecules of a 3-carbon

molecule called pyruvate. This change is accompanied by a net gain of 2 ATP

molecules and 2 NADH molecules.

Second step start at the mitochondria when the pyruvate enter to the matrix and

called Citric acid or Krebs cycle

2

Net Products from ATPs

4 ATP

+ 10 NADH.H+

+ 2 FADH2

1 NADH.H+ = 3 ATP

1 FADH2 = 2 ATP

4ATP + 30ATP + 4ATP = 38 ATP