Ekologi

In an ecosystem, the organisms that have the highest population are the producers. Producers, such as plants, are able to convert sunlight into energy through photosynthesis, allowing them to reproduce rapidly and have a large population. This is because they are at the base of the food chain and provide energy and nutrients to the other organisms in the ecosystem. Therefore, the correct answer is "produsen."

Bakteri jamur memiliki peran terpenting dalam proses dekomposisi bahan organik dalam suatu komunitas makhluk hidup. Mereka bertanggung jawab untuk menguraikan sisa-sisa organisme mati menjadi bahan yang lebih sederhana, seperti nutrisi dan mineral, yang dapat digunakan oleh organisme lain dalam rantai makanan. Proses dekomposisi ini penting untuk menjaga keseimbangan ekosistem dan daur ulang nutrisi dalam lingkungan.

The correct answer is that the intensity of light decreases with increasing depth. This is because sunlight can only penetrate a certain distance into the water, and as organisms go deeper, there is less light available for photosynthesis and other metabolic processes. As a result, organisms that require light for their survival and growth are more likely to be found near the surface where there is more light.

The transition from tropical rainforest to savanna is marked by a decrease in the number of trees. This is likely caused by a change in rainfall, as savannas typically have less rainfall compared to rainforests.

Aposematik adalah suatu mekanisme pertahanan yang digunakan oleh mangsa untuk mengancam pemangsanya dengan menunjukkan warna yang mencolok atau pola tubuh yang mencolok. Hal ini bertujuan untuk memberikan peringatan kepada pemangsa bahwa mereka memiliki pertahanan yang kuat atau bisa menyebabkan bahaya jika diserang. Dengan menggunakan aposematik, mangsa berharap pemangsa akan menghindari serangan dan mencari mangsa yang lebih mudah.

The correct answer is "Produktivitas primer". Produktivitas primer refers to the rate at which plants store energy through photosynthesis. It measures the amount of energy that is converted into organic matter by plants. This term is used to describe the efficiency of energy conversion in plants and is an important factor in understanding the overall productivity of an ecosystem.

The correct answer is "Populasi" because the researcher is studying a group of orangutans in a national park for a period of five years. The term "populasi" refers to a group of individuals of the same species that live in the same area and can potentially interbreed. In this case, the researcher is interested in studying the population dynamics and behavior of the orangutans in the national park over a specific time frame.

Lichenes dan Alga adalah golongan tumbuhan yang disebut sebagai pionir pada sebuah daerah yang telah mengalami kerusakan karena letusan gunung api. Pada kondisi yang ekstrem seperti itu, hanya tumbuhan-tumbuhan kecil yang mampu bertahan dan tumbuh pertama kali. Lichenes adalah simbiosis mutualisme antara fungi dan alga, sedangkan alga adalah organisme fotosintesis yang mampu hidup di berbagai kondisi. Kehadiran kedua golongan tumbuhan ini membantu memulihkan daerah yang terkena kerusakan akibat letusan gunung api.

The correct answer is "gurun sahara sangat kering". The Sahara desert is defined as a desert because it experiences extremely low levels of precipitation, resulting in a lack of water and moisture in the region. This arid climate is one of the defining characteristics of the Sahara desert.

The correct answer is "memiliki cakar yang merupakan senjata bagi tubuhnya" because the other options mention different defensive mechanisms that prey animals use to protect themselves, such as fangs, poison, and fur. However, having claws is not a defensive mechanism, but rather an offensive one that predators use to catch and kill their prey. Therefore, the prey animals do not possess claws as a means of defense.