Pertumbuhan Dan Perkembangan Pada Tumbuhan

1. Pertumbuhan adalah proses kenaikan volume yang irreversibel karena adanya pertambahan materi. Ciri dasar pertumbuhan di antaranya ...

Sel bertambah banyak dan besar

Dibentuknya bunga

dibentuknya buah

Bunga berubah menjadi buah

terbentuknya cabang batang

The correct answer is "Sel bertambah banyak dan besar" because the given statement defines the basic characteristics of growth, which include an increase in the number and size of cells. This aligns with the concept of cell division and enlargement, leading to an overall increase in volume. The other options mentioned, such as the formation of flowers, fruits, branches, or the transformation of flowers into fruits, are not directly related to the basic characteristics of growth.

Explanation

The correct answer is "Sel bertambah banyak dan besar" because the given statement defines the basic characteristics of growth, which include an increase in the number and size of cells. This aligns with the concept of cell division and enlargement, leading to an overall increase in volume. The other options mentioned, such as the formation of flowers, fruits, branches, or the transformation of flowers into fruits, are not directly related to the basic characteristics of growth.

2. Aglonema banyak dimanfaatkan sebagai tanaman hias karena mempunyai daun dengan motif dan warna yang menarik. Harga tanaman Aglonema ditentukan berdasarkan banyaknya daun. Untuk memperoleh tanaman Aglonema yang berdaun banyak dilakukan percobaan dengan perlakuan seperti tampak pada tabel berikut .

POT	MEDIA TANAM	PUPUK	PENAMBAHAN DAUN
A	Potongan pakis & sekam	Tanpa pupuk	2
B	Pasir kasar	Urea	0
C	Sekam padi	NPK (10:10:10)	4
D	Pakis & sekam	NPK (20:20:10)	6
E	Pasir kasar	Pupuk kandang	1

Berdasarkan percobaan, pertumbuhan daun terbaik terjadi pada .................

pot A

pot B

pot C

pot D

pot E

The best leaf growth occurred in pot D, which contained a mixture of fern and husk as the planting medium and NPK (20:20:10) as the fertilizer. This combination of planting medium and fertilizer likely provided the optimal conditions for the Aglonema plant to grow and produce a large number of leaves.

Explanation

The best leaf growth occurred in pot D, which contained a mixture of fern and husk as the planting medium and NPK (20:20:10) as the fertilizer. This combination of planting medium and fertilizer likely provided the optimal conditions for the Aglonema plant to grow and produce a large number of leaves.

3. Faktor-faktor yang mempengaruhi pertumbuhan dan perkembangan pada tumbuhan antara lain : 1. genetik 2. hormon / fitohormon 3. cadangan makanan 4. nutrisi 5. suhu dan kelembaban 6. cahaya Faktor internal yang berpengaruh terhadap pertumbuhan dan perkembangan pada tumbuhan adalah .........

1, 2 dan 3

1, 2 dan 4

1, 2 dan 5

2, 3 dan 52, 3 dan 5

2, 4 dan 6

The factors that influence growth and development in plants include genetics, hormones/phytohormones, and food reserves. These internal factors directly affect the growth and development of plants.

Explanation

The factors that influence growth and development in plants include genetics, hormones/phytohormones, and food reserves. These internal factors directly affect the growth and development of plants.

4. Perkembangan pada tumbuhan ditandai dengan ................

membesarnya sel

munculnya bunga

volume tubuh bertambah

tumbuhnya kuncup daun

memanjangnya sel

The correct answer is "munculnya bunga" because the emergence of flowers is a clear indication of the development and growth of plants. Flowers are reproductive structures that allow plants to produce seeds and ensure the continuation of their species. Therefore, the appearance of flowers is a significant milestone in the growth and development of plants.

Explanation

The correct answer is "munculnya bunga" because the emergence of flowers is a clear indication of the development and growth of plants. Flowers are reproductive structures that allow plants to produce seeds and ensure the continuation of their species. Therefore, the appearance of flowers is a significant milestone in the growth and development of plants.

5. Dua butir kacang ditanam pada tempat yang berbeda. Kacang pertama di tempat terang, sedangkan kacang kedua ditanam di tempat gelap. Setelah beberapa hari, kondisi kedua kacang tersebut terlihat berbeda. Kacang yg ditanam di tempat gelap tumbuh lebih tinggi dibandingkan kacang yg di tempat terang. Dari hal tersebut, disimpulkan bahwa ...

Kecambah di tempat terang tumbuh tidak normal

Kecambah di tempat terang tumbuh dgn lambat krn cahaya mempercepat kerja hormon

Kecambah di tempat gelap tumbuh normal

Kecambah di tempat gelap tumbuh lebih cepat krn hormon rusak bila kena cahaya

Cahaya tidak berpengaruh terhadap pertumbuhan

The explanation for the given correct answer is that the seedling grown in the dark grows faster because the hormone responsible for its growth gets damaged when exposed to light. This suggests that light inhibits the growth of the seedling by affecting the hormone levels.

Explanation

The explanation for the given correct answer is that the seedling grown in the dark grows faster because the hormone responsible for its growth gets damaged when exposed to light. This suggests that light inhibits the growth of the seedling by affecting the hormone levels.

6. Untuk membuat kecambah kacang hijau, biji kacang hijau terlebih dahulu direndam dalam air, kemudian diletakkan ke dalam wadah tertutup. Penutupan wadah dilakukan karena untuk terjadinya perkecambahan diperlukan .........................

air dan cahaya

air dan suhu hangat

cahaya dan mineral

mineral dan nutrisi

suhu hangat dan nutrisi

The correct answer is "air dan suhu hangat" because to germinate green beans, they need to be soaked in water to provide the necessary moisture for the process. Additionally, warm temperature is required for the seeds to activate enzymes and metabolic processes that initiate germination. Light is not mentioned as a requirement for germination in the given information.

Explanation

The correct answer is "air dan suhu hangat" because to germinate green beans, they need to be soaked in water to provide the necessary moisture for the process. Additionally, warm temperature is required for the seeds to activate enzymes and metabolic processes that initiate germination. Light is not mentioned as a requirement for germination in the given information.

7. Variabel manipulasi dari pernyataan " Pohon jeruk yang menerima paling banyak air akan menghasilkan jeruk terbanyak " adalah ...

Ukuran buah jeruk

pohon jefujpohon jeruk

jumlah air

hasil buah jeruk

ukuran

The variable manipulated in the statement "Pohon jeruk yang menerima paling banyak air akan menghasilkan jeruk terbanyak" is the jumlah air (amount of water). This means that the amount of water received by the orange tree is being changed or controlled in order to observe its effect on the amount of oranges produced. By manipulating the amount of water, we can determine if there is a correlation between the water intake and the yield of oranges.

Explanation

The variable manipulated in the statement "Pohon jeruk yang menerima paling banyak air akan menghasilkan jeruk terbanyak" is the jumlah air (amount of water). This means that the amount of water received by the orange tree is being changed or controlled in order to observe its effect on the amount of oranges produced. By manipulating the amount of water, we can determine if there is a correlation between the water intake and the yield of oranges.

8. Berikut ini adalah beberapa pernyataan yang berkaitan dengan fungsi hormon tumbuh ( fitohormon ) pada tumbuhan : 1. merangsang pembelahan sel 2. merangsang pembentukan buah 3. menghambat pertunasan daun 4. meningkatkan perkembangan buah dan bunga 5. mendorong perkembangan biji dan tunas Yang merupakan fungsi hormon auksin, adalah .............

1 dan 2

1 dan 5

2 dan 3

2 dan 4

3 dan 5

Hormon auksin memiliki fungsi merangsang pembelahan sel (1) dan merangsang pembentukan buah (2). Therefore, the correct answer is 1 dan 2.

Explanation

Hormon auksin memiliki fungsi merangsang pembelahan sel (1) dan merangsang pembentukan buah (2). Therefore, the correct answer is 1 dan 2.

9. Berikut ini merupakan pengaruh hormon auksin, kecuali ...

Merangsang perpanjangan sel batang

Menghambat perpanjangan sel akar

merangsang pertumbuhan akar lateral

Mempercepat aktivitas pembelahan sel titik tumbuh

Merangsang lapisan butir-butir aleuron

Auksin merupakan hormon tumbuhan yang memiliki peran penting dalam pengaturan pertumbuhan dan perkembangan tanaman. Salah satu pengaruh auksin adalah merangsang perpanjangan sel batang, menghambat perpanjangan sel akar, dan mempercepat aktivitas pembelahan sel titik tumbuh. Namun, auksin tidak memiliki pengaruh dalam merangsang lapisan butir-butir aleuron. Oleh karena itu, jawaban yang benar adalah "merangsang pertumbuhan akar lateral".

Explanation

Auksin merupakan hormon tumbuhan yang memiliki peran penting dalam pengaturan pertumbuhan dan perkembangan tanaman. Salah satu pengaruh auksin adalah merangsang perpanjangan sel batang, menghambat perpanjangan sel akar, dan mempercepat aktivitas pembelahan sel titik tumbuh. Namun, auksin tidak memiliki pengaruh dalam merangsang lapisan butir-butir aleuron. Oleh karena itu, jawaban yang benar adalah "merangsang pertumbuhan akar lateral".

10. Zona meristematik pada gambar dibawah ini ditunjukkan oleh nomor ............

A

B

C

D

E

The correct answer is E. The reason for this is that in the given image, the meristematic zone is indicated by the letter E. Meristematic zones are regions in plants where cell division and growth occur, and they are responsible for the formation of new tissues. In the image, the other letters (A, B, C, and D) do not represent the meristematic zone, so the correct answer is E.

Explanation

The correct answer is E. The reason for this is that in the given image, the meristematic zone is indicated by the letter E. Meristematic zones are regions in plants where cell division and growth occur, and they are responsible for the formation of new tissues. In the image, the other letters (A, B, C, and D) do not represent the meristematic zone, so the correct answer is E.