BIOLOGI BAB 1 T5

Antara sel berikut, yang manakah membentuk tisu asas dalam tumbuhan? Which of the following cells form the ground tissue in plants?

• Sel epidermis

  Epidermal cells

• Sel pengawal

  Guard cells

• Sel parenkima

  Parenchyma cells

• Sel mesofil palisad

  Mesophyll palisade cells

Apakah fungsi kutikel yang meliputi tisu epidermis pada permukaan luar batang dan daun?

What are the functions of the cuticle that covers the epidermal tissues on the outermost surface of stems and leaves?

I Menghalang kehilangan air yang berlebihan melalui sejatan

Prevents excessive loss of water through evaporation

II Melindungi tumbuhan daripada kecederaan mekanikal

Protects a plant from mechanical injury

III Meningkatkan luas permukaan untuk penyerapan air dan mineral

Increases the surface area for water and mineral salts absorption

IV Membenarkan kemasukan mikroorganisma yang menyebabkan penyakit

Allows the entry of microorganisms that cause diseases

• I dan II

  I and II

• I dan III

  I and III

• II dan IV

  II and IV

• III dan IV

  III and IV

Dalam hutan,sekiranya kulit pokok tercedera akibat kerap digesel tanduk haiwan seperti rusa,bagaimanakah pokok dapat pulih daripada kecederaan tersebut?

In the forest,if the bark of a tree is injured due to being rubbed with the horn of a dear,how will the plant recovered from the injury?

• Endodermis mengandungi lignin untuk menguatkan tisu kolenkima Endodermis consist of lignin to strengthen collenchyma tissue

• Kambium menjadi kurang aktif lalu menghasilkan tisu xilem yang berdinding nipis sebagai kulit pokok.

  The cambium becomes less active and forms thin-walled xylem tissue as the bark.

• Kambium vaskular membentuk silinder di sekeliling batang bagi menghasilkan floem dan xilem sekunder.

  Vascular cambium forms a complete cylinder around the stem to produce secondary phloem and xylem.

• Kambium gabus membentuk silinder di sekeliling batang bagi menghasilkan kulit pokok.

  Cork cambium forms a complete cylinder around the stem to produce ring barks.

Mengapakah bahagian tengah batang pokok berkayu biasanya bewarna gelap?

Why are the central parts of the stem of woody plants usually dark in colour?

• Akibat pertambahan usia, xilem primer menjadi kurang aktif, kehilangan air dan bahan makanan simpanan.

  Due to increase in age, the primary xylem becomes inactive, loses water and stored food materia

• Akibat pertambahan usia, xilem sekunder menjadi aktif,banyak air dan bahan makanan simpanan.

  Due to increase in age, secondary xylem becomes active, gains water and stored more food material.

• Akibat pertambahan usia, floem primer menjadi lebih aktif, mengangkut nutrien dan bahan makanan simpanan yang lebih banyak.

  Due to increase in age,secondary phloem becomes more active, transport more nutrients and stored food material.

• Akibat pertambahan usia, floem sekunder menjadi kurang aktif, kurang mengangkut nutrien dan ketiadaan bahan makanan simpanan.

  Due to increase in age,secondary phloem becomes less active, less nutrients and stored food material are transported.

Rajah 1 menunjukkan keratan memanjang hujung pucuk. Zon yang manakah mengalami pembahagian sel?

Diagram 1 shows the longitudinal section of a shoot tip.

Which zone undergoes cell division?

• Zon P

  Zone P

• Zon Q

  Zone Q

• Zon R

  Zone R

• P, S, R, Q

• P, S, Q, R

• S, P, Q, R

• S, P, R, Q

• Terlibat dalam proses pemvakuolan

  Involved in the process of vacuolation

• Mengalami pembezaan untuk membentuk tisu kekal

  Undergo differentiation to form permanent tissues

• Aktif membahagi untuk menghasilkan sel-sel baharu.

  Actively divides to produce new cells

Antara yang berikut, bahan-bahan manakah yang ditemui pada dinding sel tisu kolenkima?

Which of the following substances are found on the cell wall of collenchyme tissue?

I Hemiselulosa / Hemicellulose.

II Kutikel /Cuticle

III Lignin / Lignin

IV Pektin / Pectin

• I dan II I and II

• II dan III II and III

• III dan IV III and IV

• I dan IV I and IV

• Pertumbuhan aktif berlaku apabila tumbuhan didedahkan kepada muzik rock.

  Active growth occurs when plants are exposed to rock music.

• Sel tumbuhan aktif membahagi apabila didedahkan kepada muzik klasik.

  Plant cells divide actively when exposed to classical music.

• Hormon auksin dirangsang dengan aktif apabila muzik rock dimainkan.

  Auxin hormone is stimulated actively when rock music is played.

• Lebih banyak asid absisik dihasilkan apabila muzik klasik dimainkan.

  More abscisic acid is produced when classical music is played.

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