Ujian diagnostik ting 5

Growth of plant can be measured by the following parameters, except....

• Height

• Fresh mass

• Dry mass

• Leaf size

Which of the following tissues involved in photosynthesis?

• Epidermis tissue

• Parenchyma tissue

• Sclerenchyma tissue

• collenchyma tissue

Which of the following is micronutrient?

• Iron

• Magnesium

• Calcium

• Potassium

Bird’s nest fern is an epiphytic plant which lives on other plants.

Why is the host of epiphytes not harmed by the epiphytic plant?

• Epiphytic plants only absorb water from its host.

• Epiphytic plant only needs a small amount of nutrients which are absorbed from

  its host.

• Epiphytic plants only live on the host to get the supply of sunlight so it can

  produce its own food.

• Epiphytic plants are fully depending on the host for the supply of water and

  mineral salts.

Diagram 1 shows a cross section of a vascular tissue in plants.

Which of the following is a characteristic of R?

• It is a living cell

• Sieve plate has pores

• Located next to a companion cell

• The walls undergo uneven lignin thickening

Diagram 3 shows an experiment to study the vascular system.

What is the purpose of soaking roots in eosin solution?

• Staining of phloem tissue

• Staining of xylem tissue

• Provide mechanical support to plants

• Increases turgidity to plant root cells

Diagram 5 shows the results of an experiment of phytoremediation by planting water

hyacinth in water contaminated with chromium.

• The concentration of chromium is decreasing

• The water is suitable for plant growth

• The water is safe for aquatic life after two weeks

• Water hyacinth can grow healthier in water containing chromium

Diagram 2 shows two conditions of plant during day light and at night

• Nyctinasty

• Photonasty

• Seimonasty

• Thermonasty

What causes the shoot of a plant to grow towards light?

• The shoot needs light for photosynthesis

• The shoot needs to grow longer to avoid competition for light

• The cells shaded from light elongate faster

• The concentration of auxin is higher in cells exposed to light

Diagram 4 shows an artificial method in the production of tomatoes using the auxin.

How is the fruit produced by this method different from the fruit produced naturally?

• The fruit is sweeter.

• The fruit is more succulent.

• The fruit has more fiber.

• The fruit does not have seeds